Home / 3,930.18-5,423.73-2,251.39

Finding the Fourth Proportional to 3,930.18, 5,423.73 and 2,251.39

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Solution

The fourth proportional to 3,930.18, 5,423.73 and 2,251.39 is: 3,106.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.18 : 5,423.73 = 2,251.39 : x
  2. Step 2: Convert to fraction form
    3,930.18/5,423.73 = 2,251.39/x
  3. Step 3: Cross multiply
    3,930.18x = 5,423.73 × 2,251.39
  4. Step 4: Simplify right side
    3,930.18x = 12,210,931.48
  5. Step 5: Solve for x
    x = 12,210,931.48/3,930.18
  6. Step 6: Final answer
    x = 3,106.96

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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.