Home / 3,874.16-5,346.39-2,105.79

Finding the Fourth Proportional to 3,874.16, 5,346.39 and 2,105.79

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Solution

The fourth proportional to 3,874.16, 5,346.39 and 2,105.79 is: 2,906.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.16 : 5,346.39 = 2,105.79 : x
  2. Step 2: Convert to fraction form
    3,874.16/5,346.39 = 2,105.79/x
  3. Step 3: Cross multiply
    3,874.16x = 5,346.39 × 2,105.79
  4. Step 4: Simplify right side
    3,874.16x = 11,258,374.60
  5. Step 5: Solve for x
    x = 11,258,374.60/3,874.16
  6. Step 6: Final answer
    x = 2,906.02

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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.