Home / 3,942.32-5,440.23-2,149.75

Finding the Fourth Proportional to 3,942.32, 5,440.23 and 2,149.75

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Solution

The fourth proportional to 3,942.32, 5,440.23 and 2,149.75 is: 2,966.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.32 : 5,440.23 = 2,149.75 : x
  2. Step 2: Convert to fraction form
    3,942.32/5,440.23 = 2,149.75/x
  3. Step 3: Cross multiply
    3,942.32x = 5,440.23 × 2,149.75
  4. Step 4: Simplify right side
    3,942.32x = 11,695,134.44
  5. Step 5: Solve for x
    x = 11,695,134.44/3,942.32
  6. Step 6: Final answer
    x = 2,966.56

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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.