Home / 3,387.38-5,079.20-1,906.00

Finding the Fourth Proportional to 3,387.38, 5,079.20 and 1,906.00

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Solution

The fourth proportional to 3,387.38, 5,079.20 and 1,906.00 is: 2,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.38 : 5,079.20 = 1,906.00 : x
  2. Step 2: Convert to fraction form
    3,387.38/5,079.20 = 1,906.00/x
  3. Step 3: Cross multiply
    3,387.38x = 5,079.20 × 1,906.00
  4. Step 4: Simplify right side
    3,387.38x = 9,680,932.97
  5. Step 5: Solve for x
    x = 9,680,932.97/3,387.38
  6. Step 6: Final answer
    x = 2,857.95

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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.