Home / 3,938.28-5,425.38-2,694.12

Finding the Fourth Proportional to 3,938.28, 5,425.38 and 2,694.12

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Solution

The fourth proportional to 3,938.28, 5,425.38 and 2,694.12 is: 3,711.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.28 : 5,425.38 = 2,694.12 : x
  2. Step 2: Convert to fraction form
    3,938.28/5,425.38 = 2,694.12/x
  3. Step 3: Cross multiply
    3,938.28x = 5,425.38 × 2,694.12
  4. Step 4: Simplify right side
    3,938.28x = 14,616,624.77
  5. Step 5: Solve for x
    x = 14,616,624.77/3,938.28
  6. Step 6: Final answer
    x = 3,711.42

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Double scale
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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.