Chapter 12, Problem 66CUR

To determine

To solve: The proportion $\frac{1.4}{x}=\frac{11.2}{72}$

Answer to Problem 66CUR

The value of $x$ in the proportion is $9$ .

Explanation of Solution

Given information : The proportion is $\frac{1.4}{x}=\frac{11.2}{72}$

Concept used : Cross-multiplication method.

Calculation :

  $\begin{array}{l}\frac{1.4}{x}=\frac{11.2}{72}\\ \Rightarrow x\times 11.2=1.4\times 72\\ \Rightarrow 11.2x=100.8\\ \Rightarrow x=\frac{100.8}{11.2}\\ \Rightarrow x=9\end{array}$

Thus, the value of $x$ in the proportion is $9$