Home / 3,911.96-5,400.20-2,339.76

Finding the Fourth Proportional to 3,911.96, 5,400.20 and 2,339.76

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Solution

The fourth proportional to 3,911.96, 5,400.20 and 2,339.76 is: 3,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.96 : 5,400.20 = 2,339.76 : x
  2. Step 2: Convert to fraction form
    3,911.96/5,400.20 = 2,339.76/x
  3. Step 3: Cross multiply
    3,911.96x = 5,400.20 × 2,339.76
  4. Step 4: Simplify right side
    3,911.96x = 12,635,171.95
  5. Step 5: Solve for x
    x = 12,635,171.95/3,911.96
  6. Step 6: Final answer
    x = 3,229.88

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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.