Home / 3,930.24-5,423.86-2,251.66

Finding the Fourth Proportional to 3,930.24, 5,423.86 and 2,251.66

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Solution

The fourth proportional to 3,930.24, 5,423.86 and 2,251.66 is: 3,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.24 : 5,423.86 = 2,251.66 : x
  2. Step 2: Convert to fraction form
    3,930.24/5,423.86 = 2,251.66/x
  3. Step 3: Cross multiply
    3,930.24x = 5,423.86 × 2,251.66
  4. Step 4: Simplify right side
    3,930.24x = 12,212,688.61
  5. Step 5: Solve for x
    x = 12,212,688.61/3,930.24
  6. Step 6: Final answer
    x = 3,107.36

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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.