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Finding the Third Proportional to 5,638 and 9,242

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Solution

The third proportional to 5,638 and 9,242 is: 15,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638 : 9,242 = 9,242 : x
  2. Step 2: Convert to fraction form
    5,638/9,242 = 9,242/x
  3. Step 3: Cross multiply
    5,638x = 9,242 × 9,242
  4. Step 4: Simplify right side
    5,638x = 85,414,564
  5. Step 5: Solve for x
    x = 85,414,564/5,638
  6. Step 6: Final answer
    x = 15,149.80

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.