Home / 3,874.12-5,346.39-2,105.85

Finding the Fourth Proportional to 3,874.12, 5,346.39 and 2,105.85

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Solution

The fourth proportional to 3,874.12, 5,346.39 and 2,105.85 is: 2,906.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.12 : 5,346.39 = 2,105.85 : x
  2. Step 2: Convert to fraction form
    3,874.12/5,346.39 = 2,105.85/x
  3. Step 3: Cross multiply
    3,874.12x = 5,346.39 × 2,105.85
  4. Step 4: Simplify right side
    3,874.12x = 11,258,668.65
  5. Step 5: Solve for x
    x = 11,258,668.65/3,874.12
  6. Step 6: Final answer
    x = 2,906.12

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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.