Home / 8,128.15-12,191.92-2,284.61

Finding the Fourth Proportional to 8,128.15, 12,191.92 and 2,284.61

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Solution

The fourth proportional to 8,128.15, 12,191.92 and 2,284.61 is: 3,426.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.15 : 12,191.92 = 2,284.61 : x
  2. Step 2: Convert to fraction form
    8,128.15/12,191.92 = 2,284.61/x
  3. Step 3: Cross multiply
    8,128.15x = 12,191.92 × 2,284.61
  4. Step 4: Simplify right side
    8,128.15x = 27,853,715.68
  5. Step 5: Solve for x
    x = 27,853,715.68/8,128.15
  6. Step 6: Final answer
    x = 3,426.82

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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.