Home / 8,118.92-12,179.28-2,572.52

Finding the Fourth Proportional to 8,118.92, 12,179.28 and 2,572.52

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Solution

The fourth proportional to 8,118.92, 12,179.28 and 2,572.52 is: 3,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.92 : 12,179.28 = 2,572.52 : x
  2. Step 2: Convert to fraction form
    8,118.92/12,179.28 = 2,572.52/x
  3. Step 3: Cross multiply
    8,118.92x = 12,179.28 × 2,572.52
  4. Step 4: Simplify right side
    8,118.92x = 31,331,441.39
  5. Step 5: Solve for x
    x = 31,331,441.39/8,118.92
  6. Step 6: Final answer
    x = 3,859.07

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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.