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Finding the Third Proportional to 3,658.50 and 8,634.38

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Solution

The third proportional to 3,658.50 and 8,634.38 is: 20,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.50 : 8,634.38 = 8,634.38 : x
  2. Step 2: Convert to fraction form
    3,658.50/8,634.38 = 8,634.38/x
  3. Step 3: Cross multiply
    3,658.50x = 8,634.38 × 8,634.38
  4. Step 4: Simplify right side
    3,658.50x = 74,552,431.64
  5. Step 5: Solve for x
    x = 74,552,431.64/3,658.50
  6. Step 6: Final answer
    x = 20,377.87

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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.