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Finding the Third Proportional to 5,419.13 and 8,687.25

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Solution

The third proportional to 5,419.13 and 8,687.25 is: 13,926.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.13 : 8,687.25 = 8,687.25 : x
  2. Step 2: Convert to fraction form
    5,419.13/8,687.25 = 8,687.25/x
  3. Step 3: Cross multiply
    5,419.13x = 8,687.25 × 8,687.25
  4. Step 4: Simplify right side
    5,419.13x = 75,468,312.56
  5. Step 5: Solve for x
    x = 75,468,312.56/5,419.13
  6. Step 6: Final answer
    x = 13,926.29

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.