Home / 8,726.92-13,086.14-3,179.40

Finding the Fourth Proportional to 8,726.92, 13,086.14 and 3,179.40

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Solution

The fourth proportional to 8,726.92, 13,086.14 and 3,179.40 is: 4,767.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.92 : 13,086.14 = 3,179.40 : x
  2. Step 2: Convert to fraction form
    8,726.92/13,086.14 = 3,179.40/x
  3. Step 3: Cross multiply
    8,726.92x = 13,086.14 × 3,179.40
  4. Step 4: Simplify right side
    8,726.92x = 41,606,073.52
  5. Step 5: Solve for x
    x = 41,606,073.52/8,726.92
  6. Step 6: Final answer
    x = 4,767.56

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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.