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Finding the Third Proportional to 3,898 and 8,771

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Solution

The third proportional to 3,898 and 8,771 is: 19,735.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898 : 8,771 = 8,771 : x
  2. Step 2: Convert to fraction form
    3,898/8,771 = 8,771/x
  3. Step 3: Cross multiply
    3,898x = 8,771 × 8,771
  4. Step 4: Simplify right side
    3,898x = 76,930,441
  5. Step 5: Solve for x
    x = 76,930,441/3,898
  6. Step 6: Final answer
    x = 19,735.88

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.