Home / 4,021.78-5,550.42-2,229.43

Finding the Fourth Proportional to 4,021.78, 5,550.42 and 2,229.43

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Solution

The fourth proportional to 4,021.78, 5,550.42 and 2,229.43 is: 3,076.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,021.78 : 5,550.42 = 2,229.43 : x
  2. Step 2: Convert to fraction form
    4,021.78/5,550.42 = 2,229.43/x
  3. Step 3: Cross multiply
    4,021.78x = 5,550.42 × 2,229.43
  4. Step 4: Simplify right side
    4,021.78x = 12,374,272.86
  5. Step 5: Solve for x
    x = 12,374,272.86/4,021.78
  6. Step 6: Final answer
    x = 3,076.81

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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.