Question

How do you know if the ratios 4/2 and 20/6 forms a proportion?

Answer 1

There are 2 ways to do this problem. Both ways state that `4/2 != 20/6`. They are not in proportion.

Explanation:

There are two ways to do it:

1) Division

You could divide the numerator by the denominator of each fraction to see if they are equal/in proportion or not:

`4/2 = 2`

`20/6 ~~ 3.33`

Thus, they do not form a proportion.

2) LCM of Denominator

You could take both the denominators to one value, and see if the numerators of the fractions are the same:

`4/2` will become `(4*3)/(2*3)`

`=12/6`

Now, both the fractions have the same denominator, but the numerators are not the same number:

`12/6 != 20/6`

Thus, they do not form a proportion.