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# Really stupid ratio to fraction question watch

1. Hi new to TSR,

Hopefully I'm posting in the correct forum, apologies if not.

Basically, I've not done maths for about 10 years since leaving school and just wanted to double check my workings to save myself some embarrassment at work!

Is it correct that 4:1 as a ratio is 4/1 as a fraction?

In addition, could someone confirm that the following sentence is incorrect?

"...You could extend this by working on proportion as a fraction of the whole e.g. 7:1 for height to feet, a foot would be 1/8 of the height of the person".

Its been so long since I did maths, that I don't trust myself!

Many thanks for any responses!

Elle_Bell
2. 4:1 ratio has 5 parts.
3. (Original post by Elle_Belll)
Hi new to TSR,

Hopefully I'm posting in the correct forum, apologies if not.

Basically, I've not done maths for about 10 years since leaving school and just wanted to double check my workings to save myself some embarrassment at work!

Is it correct that 4:1 as a ratio is 4/1 as a fraction?

In addition, could someone confirm that the following sentence is incorrect?

"...You could extend this by working on proportion as a fraction of the whole e.g. 7:1 for height to feet, a foot would be 1/8 of the height of the person".

Its been so long since I did maths, that I don't trust myself!

Many thanks for any responses!

Elle_Bell
No it is not, 4:1 would mean that for every 4 (lets say oranges) there would be 1 lemon.
4. Take a moment to write "4:1" in English.

For ever 4 parts of one particular thing, there is 1 part of another different thing.

If there are 5 objects, 4 will be of one particular thing and 1 will be of another different thing.

In total, if there are 5 objects. 4 of these objects will be one thing, and 1 different object will be another thing.

If there is a ratio x:y, we then say for every x amount of one object, there are y amounts of another object. If there are x amount of 1 object and y amount of another object, then there are x+y amount of total objects. . **

Now if we're asked what proportion of all objects, ie. x+y amount of objects are just x, we'd write the fraction x/(x+y)

**Note, the actual total doesn't have to be (x+y). It usually is a multiple of (x+y). This is because ratios are like fractions and often get simplified. An 8:2 ratio is the same as a 4:1 ratio but note they would give a different (x+y) total. The former will give a total of 5 and so the proportion of x is 4/5. The latter would give a total of 10 and so the proportion of x would be 8/10. Note 4/5 is the same as 8/10!
5. Hi,

Thanks for giving such quick replies.

I am trying to convert 4:1 into a fraction.

It is an exercise about bones/heights. A person's height is the same as four of their thigh bone lengths. This is 4:1 as in 4 thigh bone lengths = a person's height.

I am confused as to what 4:1 ratio is as a fraction. Is it 4/1?

Thanks for all of your help! xxx
6. (Original post by Elle_Belll)
I am confused as to what 4:1 ratio is as a fraction. Is it 4/1?
Yes, that is correct.

So 4:1 = 4/1 (as four bones make up a person's height)

So would 7:1 be 7/1 as a fraction?

5:1 = 5/1 ? and 3:1 = 3/1 ?

Thanks! xxxxxxx
8. (Original post by Elle_Belll)
Hi,

Thanks for giving such quick replies.

I am trying to convert 4:1 into a fraction.

It is an exercise about bones/heights. A person's height is the same as four of their thigh bone lengths. This is 4:1 as in 4 thigh bone lengths = a person's height.

I am confused as to what 4:1 ratio is as a fraction. Is it 4/1?

Thanks for all of your help! xxx
You cannot convert a ratio into a fraction

Height : thigh = 4 : 1

Means that height = 4 x thigh
Also means that thigh = height

If that is what you are actually asking
9. (Original post by Elle_Belll)

"...You could extend this by working on proportion as a fraction of the whole e.g. 7:1 for height to feet, a foot would be 1/8 of the height of the person".

Its been so long since I did maths, that I don't trust myself!

Many thanks for any responses!

Elle_Bell
No

1/7
10. Thank you so much!

I seem to have been over-complicating my exercise by turning to convert ratios to fractions!

One thigh bone = 1/4 of the whole height.

Thanks!!!!!!!!!!!

xxxxxx
11. (Original post by Elle_Belll)
Thank you so much!

I seem to have been over-complicating my exercise by turning to convert ratios to fractions!

One thigh bone = 1/4 of the whole height.

Thanks!!!!!!!!!!!

xxxxxx
Yes

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