Home / 3,930.36-5,423.82-2,251.73

Finding the Fourth Proportional to 3,930.36, 5,423.82 and 2,251.73

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Solution

The fourth proportional to 3,930.36, 5,423.82 and 2,251.73 is: 3,107.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.36 : 5,423.82 = 2,251.73 : x
  2. Step 2: Convert to fraction form
    3,930.36/5,423.82 = 2,251.73/x
  3. Step 3: Cross multiply
    3,930.36x = 5,423.82 × 2,251.73
  4. Step 4: Simplify right side
    3,930.36x = 12,212,951.09
  5. Step 5: Solve for x
    x = 12,212,951.09/3,930.36
  6. Step 6: Final answer
    x = 3,107.34

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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.