we write the relation
1/8in is 12 miles, how much miles is 4 inches?
![\begin{gathered} (1)/(8)\longrightarrow12 \\ \\ 4\longrightarrow x \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/mk0hz69j1w2jnu14covkavuqgjeva5nl92.png)
where x is the number of miles to 4 inches
we can use cross multiplication to find x
multiply diagonal numbers (4 and 12) and dividing between 1/8 we obtain the value of x
![\begin{gathered} x=(4*12)/((1)/(8)) \\ \\ x=6 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/58udhd8kmv8ky6s6y8sx85mjlwt7avj6ml.png)
then the distance between two cities is 6 miles