Fie a si b cele doua numere:
a : 2 = b : 3 ==> 3×a = 2×b
b = a + 58 ==> b - a = 58
a /------/------/
b /------/------/------/
avem 3 segmente egale - 2 segmente egale = 1 segment egal = 58
a = 2 × 58 = 116
b = 3 × 58 = 174
Verificare:
174 - 116 = 58
116 : 2 = 174 : 3
58 = 58 (adevarat)
