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Finding the Fourth Proportional to 6,382.75, 8,807.79 and 3,730

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Solution

The fourth proportional to 6,382.75, 8,807.79 and 3,730 is: 5,147.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,382.75 : 8,807.79 = 3,730 : x
  2. Step 2: Convert to fraction form
    6,382.75/8,807.79 = 3,730/x
  3. Step 3: Cross multiply
    6,382.75x = 8,807.79 × 3,730
  4. Step 4: Simplify right side
    6,382.75x = 32,853,056.70
  5. Step 5: Solve for x
    x = 32,853,056.70/6,382.75
  6. Step 6: Final answer
    x = 5,147.16

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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.