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Finding the Fourth Proportional to 6,641.38, 9,165.04 and 3,657.15

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Solution

The fourth proportional to 6,641.38, 9,165.04 and 3,657.15 is: 5,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.38 : 9,165.04 = 3,657.15 : x
  2. Step 2: Convert to fraction form
    6,641.38/9,165.04 = 3,657.15/x
  3. Step 3: Cross multiply
    6,641.38x = 9,165.04 × 3,657.15
  4. Step 4: Simplify right side
    6,641.38x = 33,517,880.21
  5. Step 5: Solve for x
    x = 33,517,880.21/6,641.38
  6. Step 6: Final answer
    x = 5,046.83

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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.