Question

What is the ratio that you would use to convert 7.920 miles to feet? Remember 1 mile = 5280 feet

Answer 1

Ratio = 5280, it means you have to multiply the number of miles by 5280 to obtain the number of feet

Explanation

you can easily solve and understand this by using a rule of three

Step 1

Let

x = numbers of feet in 7920 feet

if

$1\text{ mile}\rightarrow5280\text{ feet}$

then

$7920\text{ miles }\rightarrow x$

the ratio must be the same, Hence

$\frac{1\text{ miles}}{5280\text{ feet}}=\frac{7920\text{ miles}}{x}$

Step 2

solve for x

$\begin{gathered} \frac{1\text{ miles}}{5280\text{ feet}}=\frac{7920\text{ miles}}{x\text{ feet}} \\ xfeet\cdot1\text{ miles= 7920miles}\cdot5280\text{ feet} \\ x=\frac{7920\cdot5280}{1\text{ }} \\ x=\text{ 7920}\cdot\text{ ratio} \\ \text{then} \\ \text{ratio}=5280 \\ x=7920\cdot\text{ratio}=7920\cdot5280 \\ x=41817600 \end{gathered}$