Question

answer this question pls​

Answer 1

Answer:

a is not in proportion

Step-by-step explanation:

If a : b = c : d are in proportion then a/b = c/d

i.e ad = bc

Product of extremes = Product of means

This is called cross product rule

(1) 6,8,5,7

6 × 7 ≠ 8 × 5

42 ≠ 40

(2) 7,3,14,6

7×6 =3×14

42 = 42

(3) 18,27,12,18

18×18 = 27×12

324 = 324

(4) 8,6,12,9

9×8 = 12×6

72 = 72

b,c,d are in proportion

a is not in proportion