Home / 3,991.20-5,983.11-2,039.10

Finding the Fourth Proportional to 3,991.20, 5,983.11 and 2,039.10

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Solution

The fourth proportional to 3,991.20, 5,983.11 and 2,039.10 is: 3,056.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.20 : 5,983.11 = 2,039.10 : x
  2. Step 2: Convert to fraction form
    3,991.20/5,983.11 = 2,039.10/x
  3. Step 3: Cross multiply
    3,991.20x = 5,983.11 × 2,039.10
  4. Step 4: Simplify right side
    3,991.20x = 12,200,159.60
  5. Step 5: Solve for x
    x = 12,200,159.60/3,991.20
  6. Step 6: Final answer
    x = 3,056.76

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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.