# How do you know if the pair 3/2 and 18/8 form a proportion?

Sep 28, 2017

No.

#### Explanation:

For two fractions to be proportional, they must be equivalent. $\frac{3}{2} = 1.5$ and $\frac{18}{8} = 2.25$, so these fractions are not proportional.

Another way to check is by noting that the numerator of $\frac{3}{2}$ is multiplied by $6$ to give you $18$, but the denominator is only multiplied by $4$.

And, since $6$ obviously doesn't equal $4$, this is another check.

However, $\frac{3}{2}$ and $\frac{18}{12}$ are in proportion.