Finding the Third Proportional to 8,781.75 and 18,690.75
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Solution
The third proportional to 8,781.75 and 18,690.75 is: 39,780.70
Step by Step Solution
- Step 1: Write the proportion equation
8,781.75 : 18,690.75 = 18,690.75 : x - Step 2: Convert to fraction form
8,781.75/18,690.75 = 18,690.75/x - Step 3: Cross multiply
8,781.75x = 18,690.75 × 18,690.75 - Step 4: Simplify right side
8,781.75x = 349,344,135.56 - Step 5: Solve for x
x = 349,344,135.56/8,781.75 - Step 6: Final answer
x = 39,780.70
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These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.