Home / 3,958.20-5,462.10-2,279.70

Finding the Fourth Proportional to 3,958.20, 5,462.10 and 2,279.70

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Solution

The fourth proportional to 3,958.20, 5,462.10 and 2,279.70 is: 3,145.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.20 : 5,462.10 = 2,279.70 : x
  2. Step 2: Convert to fraction form
    3,958.20/5,462.10 = 2,279.70/x
  3. Step 3: Cross multiply
    3,958.20x = 5,462.10 × 2,279.70
  4. Step 4: Simplify right side
    3,958.20x = 12,451,949.37
  5. Step 5: Solve for x
    x = 12,451,949.37/3,958.20
  6. Step 6: Final answer
    x = 3,145.86

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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.