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Finding the Third Proportional to 1,629.38 and 3,937.88

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Solution

The third proportional to 1,629.38 and 3,937.88 is: 9,517.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.38 : 3,937.88 = 3,937.88 : x
  2. Step 2: Convert to fraction form
    1,629.38/3,937.88 = 3,937.88/x
  3. Step 3: Cross multiply
    1,629.38x = 3,937.88 × 3,937.88
  4. Step 4: Simplify right side
    1,629.38x = 15,506,859.52
  5. Step 5: Solve for x
    x = 15,506,859.52/1,629.38
  6. Step 6: Final answer
    x = 9,517.06

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.