2.5 inches ... 15 miles
4 inches ... x miles = ?
If you would like to know what is the actual distance between Bay City and Greenwood, you can calculate this using the following steps:
2.5 * x = 15 * 4
2.5 * x = 60 /2.5
x = 60 / 2.5
x = 24 miles
Result: The distance between Bay City and Greenwood is 24 miles.