Home / 3,997.28-5,986.20-2,761.40

Finding the Fourth Proportional to 3,997.28, 5,986.20 and 2,761.40

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Solution

The fourth proportional to 3,997.28, 5,986.20 and 2,761.40 is: 4,135.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.28 : 5,986.20 = 2,761.40 : x
  2. Step 2: Convert to fraction form
    3,997.28/5,986.20 = 2,761.40/x
  3. Step 3: Cross multiply
    3,997.28x = 5,986.20 × 2,761.40
  4. Step 4: Simplify right side
    3,997.28x = 16,530,292.68
  5. Step 5: Solve for x
    x = 16,530,292.68/3,997.28
  6. Step 6: Final answer
    x = 4,135.39

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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.