Question

Determine whether each ratio or rate is proportional. Explain your reasoning and write the proportion.$3 for 6 cookies; $9 for 18 cookies

Answer 1

A proportion is an equality of two ratios. Both given information is showed below.

First relation

$\frac{3\colon3}{6\colon3}=\frac{1}{2}$

Second relation

$\frac{9\colon3}{18\colon3}=\frac{3\colon3}{6\colon3}=\frac{1}{2}$