The scale on the map says that 1.5 cm represents 40 miles. on the map the distance between columbia, sc and atlanta is 7 cm. which is the correct proportion to use for finding the real distance between the cities? a) none of these b) 1.5 40 = 7 x c) 1.5 7 = x 40 d) 40 1.5 = 7 x