Home / 3,874.20-5,346.33-2,105.79

Finding the Fourth Proportional to 3,874.20, 5,346.33 and 2,105.79

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Solution

The fourth proportional to 3,874.20, 5,346.33 and 2,105.79 is: 2,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.20 : 5,346.33 = 2,105.79 : x
  2. Step 2: Convert to fraction form
    3,874.20/5,346.33 = 2,105.79/x
  3. Step 3: Cross multiply
    3,874.20x = 5,346.33 × 2,105.79
  4. Step 4: Simplify right side
    3,874.20x = 11,258,248.25
  5. Step 5: Solve for x
    x = 11,258,248.25/3,874.20
  6. Step 6: Final answer
    x = 2,905.95

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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.