Home / 3,892.20-5,371.37-2,123.97

Finding the Fourth Proportional to 3,892.20, 5,371.37 and 2,123.97

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Solution

The fourth proportional to 3,892.20, 5,371.37 and 2,123.97 is: 2,931.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.20 : 5,371.37 = 2,123.97 : x
  2. Step 2: Convert to fraction form
    3,892.20/5,371.37 = 2,123.97/x
  3. Step 3: Cross multiply
    3,892.20x = 5,371.37 × 2,123.97
  4. Step 4: Simplify right side
    3,892.20x = 11,408,618.12
  5. Step 5: Solve for x
    x = 11,408,618.12/3,892.20
  6. Step 6: Final answer
    x = 2,931.15

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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.