Question

Find the missing value in the ratio table. 3 15 Enter answer below

Answer 1

ANSWER

6

EXPLANATION

We have the ratio table given.

Let the missing number be x.

From the table, we see that the ratio is:

3 : 15 = x : 30 = 18 : 90 = 24 : 120

So, we can pick one group of ratio to compare with the group of the missing number.

That is:

$\begin{gathered} 3\text{ : 15 = x : 30} \\ \Rightarrow\text{ }\frac{3}{15}\text{ = }\frac{x}{30} \\ \text{Cross}-\text{ multiply:} \\ 15\cdot\text{ x = 3 }\cdot\text{ 30} \\ 15x\text{ = 90} \\ x\text{ = }\frac{90}{15}\text{ = 6} \end{gathered}$

So, the missing number is 6.