Home / 8,414.88-12,624.14-3,220.75

Finding the Fourth Proportional to 8,414.88, 12,624.14 and 3,220.75

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Solution

The fourth proportional to 8,414.88, 12,624.14 and 3,220.75 is: 4,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,414.88 : 12,624.14 = 3,220.75 : x
  2. Step 2: Convert to fraction form
    8,414.88/12,624.14 = 3,220.75/x
  3. Step 3: Cross multiply
    8,414.88x = 12,624.14 × 3,220.75
  4. Step 4: Simplify right side
    8,414.88x = 40,659,198.91
  5. Step 5: Solve for x
    x = 40,659,198.91/8,414.88
  6. Step 6: Final answer
    x = 4,831.82

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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.