Home / 4,129.92-5,691.60-2,803.68

Finding the Fourth Proportional to 4,129.92, 5,691.60 and 2,803.68

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Solution

The fourth proportional to 4,129.92, 5,691.60 and 2,803.68 is: 3,863.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,129.92 : 5,691.60 = 2,803.68 : x
  2. Step 2: Convert to fraction form
    4,129.92/5,691.60 = 2,803.68/x
  3. Step 3: Cross multiply
    4,129.92x = 5,691.60 × 2,803.68
  4. Step 4: Simplify right side
    4,129.92x = 15,957,425.09
  5. Step 5: Solve for x
    x = 15,957,425.09/4,129.92
  6. Step 6: Final answer
    x = 3,863.86

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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.