Home / 8,671.28-13,010.92-3,126.88

Finding the Fourth Proportional to 8,671.28, 13,010.92 and 3,126.88

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Solution

The fourth proportional to 8,671.28, 13,010.92 and 3,126.88 is: 4,691.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.28 : 13,010.92 = 3,126.88 : x
  2. Step 2: Convert to fraction form
    8,671.28/13,010.92 = 3,126.88/x
  3. Step 3: Cross multiply
    8,671.28x = 13,010.92 × 3,126.88
  4. Step 4: Simplify right side
    8,671.28x = 40,683,585.53
  5. Step 5: Solve for x
    x = 40,683,585.53/8,671.28
  6. Step 6: Final answer
    x = 4,691.76

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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.