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Finding the Fourth Proportional to 6,385.81, 8,811.10 and 3,732.71

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Solution

The fourth proportional to 6,385.81, 8,811.10 and 3,732.71 is: 5,150.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.81 : 8,811.10 = 3,732.71 : x
  2. Step 2: Convert to fraction form
    6,385.81/8,811.10 = 3,732.71/x
  3. Step 3: Cross multiply
    6,385.81x = 8,811.10 × 3,732.71
  4. Step 4: Simplify right side
    6,385.81x = 32,889,227.69
  5. Step 5: Solve for x
    x = 32,889,227.69/6,385.81
  6. Step 6: Final answer
    x = 5,150.36

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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.