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### Grade 6 - Mathematics7.2 Find if the Given Numbers are in Proportion

 If four numbers are in proportion then The product of extremes = The product of means That is, if a:b = c:d, then axd = bxc. Example: 2:5 = 10:25 -- Is this proportion correct? Product of extremes = 2 x 25 = 50. Product of means = 5 x 10 = 50. Since, Product of extremes = Products of means, the numbers 2:5 = 10:25 are in proportion. Directions: Find if the given numbers are in proportion. Also write at least ten examples of your own.
 Q 1: 75:80 = 450:400 -- are they in proportion?NoYes Q 2: 30:35 = 450:700 -- are they in proportion?YesNo Q 3: 15:20 = 225:300 -- are they in proportion?NoYes Q 4: 21:25 = 441:625 -- are they in proportion?YesNo Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!

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