Question
Determine if the following numbers are in proportion:
32, 48, 70, 210
32, 48, 70, 210
✓
Answer
32, 48, 70, 210 or 32 : 48 :: 70 : 210
Are in proportion
If ad = bc
If 32 × 210 = 48 × 70
If 6720 = 3360
Which is not true
$\therefore$ 32, 48, 70, 210 are not in proportion
Are in proportion
If ad = bc
If 32 × 210 = 48 × 70
If 6720 = 3360
Which is not true
$\therefore$ 32, 48, 70, 210 are not in proportion
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