What is the map scale if the map distance is and the land distance is ?

The map scale formula is:

Known values:

Before solving the map scale, we need to convert the unit to match the same unit:

Written to display the map scale with map/land distances:

(Answer)

Reference:

http://egsc.usgs.gov/isb/pubs/factsheets/fs01502.html

http://www.physicalgeography.net/fundamentals/2a.html

http://en.wikipedia.org/wiki/Map_scale