Home / 4,027.78-5,568.32-3,990.86

Finding the Fourth Proportional to 4,027.78, 5,568.32 and 3,990.86

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Solution

The fourth proportional to 4,027.78, 5,568.32 and 3,990.86 is: 5,517.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,027.78 : 5,568.32 = 3,990.86 : x
  2. Step 2: Convert to fraction form
    4,027.78/5,568.32 = 3,990.86/x
  3. Step 3: Cross multiply
    4,027.78x = 5,568.32 × 3,990.86
  4. Step 4: Simplify right side
    4,027.78x = 22,222,367.69
  5. Step 5: Solve for x
    x = 22,222,367.69/4,027.78
  6. Step 6: Final answer
    x = 5,517.28

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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.