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Finding the Third Proportional to 3,876 and 9,149

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Solution

The third proportional to 3,876 and 9,149 is: 21,595.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876 : 9,149 = 9,149 : x
  2. Step 2: Convert to fraction form
    3,876/9,149 = 9,149/x
  3. Step 3: Cross multiply
    3,876x = 9,149 × 9,149
  4. Step 4: Simplify right side
    3,876x = 83,704,201
  5. Step 5: Solve for x
    x = 83,704,201/3,876
  6. Step 6: Final answer
    x = 21,595.51

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.