Home / 3,879.90-5,355.11-2,553.73

Finding the Fourth Proportional to 3,879.90, 5,355.11 and 2,553.73

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Solution

The fourth proportional to 3,879.90, 5,355.11 and 2,553.73 is: 3,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.90 : 5,355.11 = 2,553.73 : x
  2. Step 2: Convert to fraction form
    3,879.90/5,355.11 = 2,553.73/x
  3. Step 3: Cross multiply
    3,879.90x = 5,355.11 × 2,553.73
  4. Step 4: Simplify right side
    3,879.90x = 13,675,498.06
  5. Step 5: Solve for x
    x = 13,675,498.06/3,879.90
  6. Step 6: Final answer
    x = 3,524.70

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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.