Home / 8,389.28-12,585.43-3,456.17

Finding the Fourth Proportional to 8,389.28, 12,585.43 and 3,456.17

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Solution

The fourth proportional to 8,389.28, 12,585.43 and 3,456.17 is: 5,184.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.28 : 12,585.43 = 3,456.17 : x
  2. Step 2: Convert to fraction form
    8,389.28/12,585.43 = 3,456.17/x
  3. Step 3: Cross multiply
    8,389.28x = 12,585.43 × 3,456.17
  4. Step 4: Simplify right side
    8,389.28x = 43,497,385.60
  5. Step 5: Solve for x
    x = 43,497,385.60/8,389.28
  6. Step 6: Final answer
    x = 5,184.88

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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.