Question

Aratati ca urmatoarele patru numere pot fi termenii unei proportii :
a) 2, 3 , 10 , 10
b) 7 , 4 , 21 , 12
c) 5 , 6 , 35 , 42
d) 8 , 65 , 40 , 13
e) 9 , 20 , 15 , 12
f) 6 , 49 , 21 , 14

Answer 1

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Answer 2

2·15 = 3·10 => 2/10 = 3/15

7·12 = 4·21 => 7/21 = 4/12

5·42 = 6·35 => 5/35 = 6/42

8·65 = 13·40 => 8/40 = 13/65

9·20 = 12·15 => 9/12 = 15/20

6·49 = 21·14 => 6/21 = 14/49