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Finding the Third Proportional to 5,438 and 9,165

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Solution

The third proportional to 5,438 and 9,165 is: 15,446.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438 : 9,165 = 9,165 : x
  2. Step 2: Convert to fraction form
    5,438/9,165 = 9,165/x
  3. Step 3: Cross multiply
    5,438x = 9,165 × 9,165
  4. Step 4: Simplify right side
    5,438x = 83,997,225
  5. Step 5: Solve for x
    x = 83,997,225/5,438
  6. Step 6: Final answer
    x = 15,446.35

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.