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Finding the Third Proportional to 8,689 and 9,499

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Solution

The third proportional to 8,689 and 9,499 is: 10,384.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689 : 9,499 = 9,499 : x
  2. Step 2: Convert to fraction form
    8,689/9,499 = 9,499/x
  3. Step 3: Cross multiply
    8,689x = 9,499 × 9,499
  4. Step 4: Simplify right side
    8,689x = 90,231,001
  5. Step 5: Solve for x
    x = 90,231,001/8,689
  6. Step 6: Final answer
    x = 10,384.51

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.