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Finding the Fourth Proportional to 6,617.38, 9,130.28 and 3,962.90

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Solution

The fourth proportional to 6,617.38, 9,130.28 and 3,962.90 is: 5,467.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.38 : 9,130.28 = 3,962.90 : x
  2. Step 2: Convert to fraction form
    6,617.38/9,130.28 = 3,962.90/x
  3. Step 3: Cross multiply
    6,617.38x = 9,130.28 × 3,962.90
  4. Step 4: Simplify right side
    6,617.38x = 36,182,386.61
  5. Step 5: Solve for x
    x = 36,182,386.61/6,617.38
  6. Step 6: Final answer
    x = 5,467.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.