Home / 3,998.52-5,517.79-2,319.80

Finding the Fourth Proportional to 3,998.52, 5,517.79 and 2,319.80

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Solution

The fourth proportional to 3,998.52, 5,517.79 and 2,319.80 is: 3,201.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.52 : 5,517.79 = 2,319.80 : x
  2. Step 2: Convert to fraction form
    3,998.52/5,517.79 = 2,319.80/x
  3. Step 3: Cross multiply
    3,998.52x = 5,517.79 × 2,319.80
  4. Step 4: Simplify right side
    3,998.52x = 12,800,135.85
  5. Step 5: Solve for x
    x = 12,800,135.85/3,998.52
  6. Step 6: Final answer
    x = 3,201.22

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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.