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Finding the Third Proportional to 8,900 and 11,398

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Solution

The third proportional to 8,900 and 11,398 is: 14,597.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900 : 11,398 = 11,398 : x
  2. Step 2: Convert to fraction form
    8,900/11,398 = 11,398/x
  3. Step 3: Cross multiply
    8,900x = 11,398 × 11,398
  4. Step 4: Simplify right side
    8,900x = 129,914,404
  5. Step 5: Solve for x
    x = 129,914,404/8,900
  6. Step 6: Final answer
    x = 14,597.12

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.