Home / 4,120.62-5,687.25-3,222.57

Finding the Fourth Proportional to 4,120.62, 5,687.25 and 3,222.57

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Solution

The fourth proportional to 4,120.62, 5,687.25 and 3,222.57 is: 4,447.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.62 : 5,687.25 = 3,222.57 : x
  2. Step 2: Convert to fraction form
    4,120.62/5,687.25 = 3,222.57/x
  3. Step 3: Cross multiply
    4,120.62x = 5,687.25 × 3,222.57
  4. Step 4: Simplify right side
    4,120.62x = 18,327,588.60
  5. Step 5: Solve for x
    x = 18,327,588.60/4,120.62
  6. Step 6: Final answer
    x = 4,447.78

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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.