Home / 3,941.20-5,439.18-2,172.97

Finding the Fourth Proportional to 3,941.20, 5,439.18 and 2,172.97

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Solution

The fourth proportional to 3,941.20, 5,439.18 and 2,172.97 is: 2,998.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.20 : 5,439.18 = 2,172.97 : x
  2. Step 2: Convert to fraction form
    3,941.20/5,439.18 = 2,172.97/x
  3. Step 3: Cross multiply
    3,941.20x = 5,439.18 × 2,172.97
  4. Step 4: Simplify right side
    3,941.20x = 11,819,174.96
  5. Step 5: Solve for x
    x = 11,819,174.96/3,941.20
  6. Step 6: Final answer
    x = 2,998.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.