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Finding the Third Proportional to 4,245 and 9,372

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Solution

The third proportional to 4,245 and 9,372 is: 20,691.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,245 : 9,372 = 9,372 : x
  2. Step 2: Convert to fraction form
    4,245/9,372 = 9,372/x
  3. Step 3: Cross multiply
    4,245x = 9,372 × 9,372
  4. Step 4: Simplify right side
    4,245x = 87,834,384
  5. Step 5: Solve for x
    x = 87,834,384/4,245
  6. Step 6: Final answer
    x = 20,691.26

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.