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Finding the Fourth Proportional to 8,155.86, 12,232.17 and 2,959.98

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Solution

The fourth proportional to 8,155.86, 12,232.17 and 2,959.98 is: 4,439.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.86 : 12,232.17 = 2,959.98 : x
  2. Step 2: Convert to fraction form
    8,155.86/12,232.17 = 2,959.98/x
  3. Step 3: Cross multiply
    8,155.86x = 12,232.17 × 2,959.98
  4. Step 4: Simplify right side
    8,155.86x = 36,206,978.56
  5. Step 5: Solve for x
    x = 36,206,978.56/8,155.86
  6. Step 6: Final answer
    x = 4,439.38

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1.5x scale

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.