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Finding the Third Proportional to 3,866 and 9,119

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Solution

The third proportional to 3,866 and 9,119 is: 21,509.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866 : 9,119 = 9,119 : x
  2. Step 2: Convert to fraction form
    3,866/9,119 = 9,119/x
  3. Step 3: Cross multiply
    3,866x = 9,119 × 9,119
  4. Step 4: Simplify right side
    3,866x = 83,156,161
  5. Step 5: Solve for x
    x = 83,156,161/3,866
  6. Step 6: Final answer
    x = 21,509.61

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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.