How can we determine if two ratios form a proportion? Like for example, how can we determine if 1/3 and 13/39 can form a proportion???
Your help would be greatly appreciated!
Answers
Answered by
7
Answer:
If they're in fraction form, set them equal to each other to test if they are proportional. Cross multiply and simplify. If you get a true statement, then the ratios are proportional!
Answered by
0
Answer:
We can determine it by converting them into fractions and then cross multiplying or by multiplying the means and extremes together (in a:b::c:d, a and d are extremes while b and c are means).
Step-by-step explanation:
Method 1:
1:3= 1/3
13:39= 13/39
1*39/3*13 (multiplying 1/3 by reciprocal (multiplicative inverse) of 13/39)
= 39/39
= 1
Method 2:
1:3::13:39
1*39:3*13
= 39:39
= 1
If the answer is one, the ratios are in proportion.
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