What proportion is 4 out of 40?

What proportion is 4 out of 40? In other words, what proportion is 4 out of 40 as a percentage? More specifically, if 4 is the part, and 40 is the whole, what will the part be if the whole is 100?

Below is a more straightforward illustration showing you what we mean when we say we want find the proportion of 4 out of 40 as a percentage:

4 out of 40 = P out of 100

The above problem can be made into an equation and can be solved like this:

P/100 = 4/40
P = 400/40
P = 10

Now we know that the proportion of 4 out of 40 is the same as 10 out of 100, which means that we have our answer:

What proportion is 4 out of 40? = 10%

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