Finding the Third Proportional to 855 and 1,425
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Solution
The third proportional to 855 and 1,425 is: 2,375
Step by Step Solution
- Step 1: Write the proportion equation
855 : 1,425 = 1,425 : x - Step 2: Convert to fraction form
855/1,425 = 1,425/x - Step 3: Cross multiply
855x = 1,425 × 1,425 - Step 4: Simplify right side
855x = 2,030,625 - Step 5: Solve for x
x = 2,030,625/855 - Step 6: Final answer
x = 2,375
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These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.