Home / 3,998.12-5,516.55-2,229.68

Finding the Fourth Proportional to 3,998.12, 5,516.55 and 2,229.68

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Solution

The fourth proportional to 3,998.12, 5,516.55 and 2,229.68 is: 3,076.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.12 : 5,516.55 = 2,229.68 : x
  2. Step 2: Convert to fraction form
    3,998.12/5,516.55 = 2,229.68/x
  3. Step 3: Cross multiply
    3,998.12x = 5,516.55 × 2,229.68
  4. Step 4: Simplify right side
    3,998.12x = 12,300,113.62
  5. Step 5: Solve for x
    x = 12,300,113.62/3,998.12
  6. Step 6: Final answer
    x = 3,076.48

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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.