Home / 3,930.39-5,423.92-2,252.35

Finding the Fourth Proportional to 3,930.39, 5,423.92 and 2,252.35

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Solution

The fourth proportional to 3,930.39, 5,423.92 and 2,252.35 is: 3,108.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.39 : 5,423.92 = 2,252.35 : x
  2. Step 2: Convert to fraction form
    3,930.39/5,423.92 = 2,252.35/x
  3. Step 3: Cross multiply
    3,930.39x = 5,423.92 × 2,252.35
  4. Step 4: Simplify right side
    3,930.39x = 12,216,566.21
  5. Step 5: Solve for x
    x = 12,216,566.21/3,930.39
  6. Step 6: Final answer
    x = 3,108.23

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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.