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Finding the Fourth Proportional to 5,761.14, 8,641.68 and 3,812.88

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Solution

The fourth proportional to 5,761.14, 8,641.68 and 3,812.88 is: 5,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,761.14 : 8,641.68 = 3,812.88 : x
  2. Step 2: Convert to fraction form
    5,761.14/8,641.68 = 3,812.88/x
  3. Step 3: Cross multiply
    5,761.14x = 8,641.68 × 3,812.88
  4. Step 4: Simplify right side
    5,761.14x = 32,949,688.84
  5. Step 5: Solve for x
    x = 32,949,688.84/5,761.14
  6. Step 6: Final answer
    x = 5,719.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.