Home / 3,961.40-5,942.10-2,655.80

Finding the Fourth Proportional to 3,961.40, 5,942.10 and 2,655.80

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Solution

The fourth proportional to 3,961.40, 5,942.10 and 2,655.80 is: 3,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.40 : 5,942.10 = 2,655.80 : x
  2. Step 2: Convert to fraction form
    3,961.40/5,942.10 = 2,655.80/x
  3. Step 3: Cross multiply
    3,961.40x = 5,942.10 × 2,655.80
  4. Step 4: Simplify right side
    3,961.40x = 15,781,029.18
  5. Step 5: Solve for x
    x = 15,781,029.18/3,961.40
  6. Step 6: Final answer
    x = 3,983.70

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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.