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Finding the Third Proportional to 3,600 and 7,909

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Solution

The third proportional to 3,600 and 7,909 is: 17,375.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600 : 7,909 = 7,909 : x
  2. Step 2: Convert to fraction form
    3,600/7,909 = 7,909/x
  3. Step 3: Cross multiply
    3,600x = 7,909 × 7,909
  4. Step 4: Simplify right side
    3,600x = 62,552,281
  5. Step 5: Solve for x
    x = 62,552,281/3,600
  6. Step 6: Final answer
    x = 17,375.63

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.