Home / 8,480.43-12,711.78-2,853.90

Finding the Fourth Proportional to 8,480.43, 12,711.78 and 2,853.90

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Solution

The fourth proportional to 8,480.43, 12,711.78 and 2,853.90 is: 4,277.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.43 : 12,711.78 = 2,853.90 : x
  2. Step 2: Convert to fraction form
    8,480.43/12,711.78 = 2,853.90/x
  3. Step 3: Cross multiply
    8,480.43x = 12,711.78 × 2,853.90
  4. Step 4: Simplify right side
    8,480.43x = 36,278,148.94
  5. Step 5: Solve for x
    x = 36,278,148.94/8,480.43
  6. Step 6: Final answer
    x = 4,277.87

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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.