Home / 3,871.92-5,343.62-2,380.82

Finding the Fourth Proportional to 3,871.92, 5,343.62 and 2,380.82

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Solution

The fourth proportional to 3,871.92, 5,343.62 and 2,380.82 is: 3,285.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.92 : 5,343.62 = 2,380.82 : x
  2. Step 2: Convert to fraction form
    3,871.92/5,343.62 = 2,380.82/x
  3. Step 3: Cross multiply
    3,871.92x = 5,343.62 × 2,380.82
  4. Step 4: Simplify right side
    3,871.92x = 12,722,158.75
  5. Step 5: Solve for x
    x = 12,722,158.75/3,871.92
  6. Step 6: Final answer
    x = 3,285.75

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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.