Home / 3,983.28-5,973.84-1,385.88

Finding the Fourth Proportional to 3,983.28, 5,973.84 and 1,385.88

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Solution

The fourth proportional to 3,983.28, 5,973.84 and 1,385.88 is: 2,078.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.28 : 5,973.84 = 1,385.88 : x
  2. Step 2: Convert to fraction form
    3,983.28/5,973.84 = 1,385.88/x
  3. Step 3: Cross multiply
    3,983.28x = 5,973.84 × 1,385.88
  4. Step 4: Simplify right side
    3,983.28x = 8,279,025.38
  5. Step 5: Solve for x
    x = 8,279,025.38/3,983.28
  6. Step 6: Final answer
    x = 2,078.44

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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.