Home / 4,121.09-5,682.56-3,174.78

Finding the Fourth Proportional to 4,121.09, 5,682.56 and 3,174.78

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Solution

The fourth proportional to 4,121.09, 5,682.56 and 3,174.78 is: 4,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.09 : 5,682.56 = 3,174.78 : x
  2. Step 2: Convert to fraction form
    4,121.09/5,682.56 = 3,174.78/x
  3. Step 3: Cross multiply
    4,121.09x = 5,682.56 × 3,174.78
  4. Step 4: Simplify right side
    4,121.09x = 18,040,861.96
  5. Step 5: Solve for x
    x = 18,040,861.96/4,121.09
  6. Step 6: Final answer
    x = 4,377.70

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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.