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Finding the Fourth Proportional to 6,381.73, 8,807.13 and 3,730.69

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Solution

The fourth proportional to 6,381.73, 8,807.13 and 3,730.69 is: 5,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.73 : 8,807.13 = 3,730.69 : x
  2. Step 2: Convert to fraction form
    6,381.73/8,807.13 = 3,730.69/x
  3. Step 3: Cross multiply
    6,381.73x = 8,807.13 × 3,730.69
  4. Step 4: Simplify right side
    6,381.73x = 32,856,609.13
  5. Step 5: Solve for x
    x = 32,856,609.13/6,381.73
  6. Step 6: Final answer
    x = 5,148.55

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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.