Home / 3,902.40-5,385.31-2,134

Finding the Fourth Proportional to 3,902.40, 5,385.31 and 2,134

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Solution

The fourth proportional to 3,902.40, 5,385.31 and 2,134 is: 2,944.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.40 : 5,385.31 = 2,134 : x
  2. Step 2: Convert to fraction form
    3,902.40/5,385.31 = 2,134/x
  3. Step 3: Cross multiply
    3,902.40x = 5,385.31 × 2,134
  4. Step 4: Simplify right side
    3,902.40x = 11,492,251.54
  5. Step 5: Solve for x
    x = 11,492,251.54/3,902.40
  6. Step 6: Final answer
    x = 2,944.92

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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.