Finding the Third Proportional to 1,387.13 and 2,355.75
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Solution
The third proportional to 1,387.13 and 2,355.75 is: 4,000.76
Step by Step Solution
- Step 1: Write the proportion equation
1,387.13 : 2,355.75 = 2,355.75 : x - Step 2: Convert to fraction form
1,387.13/2,355.75 = 2,355.75/x - Step 3: Cross multiply
1,387.13x = 2,355.75 × 2,355.75 - Step 4: Simplify right side
1,387.13x = 5,549,558.06 - Step 5: Solve for x
x = 5,549,558.06/1,387.13 - Step 6: Final answer
x = 4,000.76
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These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.