3 3/4 : 10 2/5 = 3 11/13 : х,
х = (10 2/5 * 3 11/13) : 3 3/4,
х = (52/5 * 50/13) : 15/4,
х = 52/5 * 50/13 * 4/15,
х = 32/3,
х = 10 2/3,
получаем пропорцию:
3 3/4 : 10 2/5 = 3 11/13 : 10 2/3
3 3/4 : 10 2/5 = 3 11/13 : х,
х = (10 2/5 * 3 11/13) : 3 3/4,
х = (52/5 * 50/13) : 15/4,
х = 52/5 * 50/13 * 4/15,
х = 32/3,
х = 10 2/3,
получаем пропорцию:
3 3/4 : 10 2/5 = 3 11/13 : 10 2/3