Home / 3,928.92-5,861.91-3,134.58

Finding the Fourth Proportional to 3,928.92, 5,861.91 and 3,134.58

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Solution

The fourth proportional to 3,928.92, 5,861.91 and 3,134.58 is: 4,676.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.92 : 5,861.91 = 3,134.58 : x
  2. Step 2: Convert to fraction form
    3,928.92/5,861.91 = 3,134.58/x
  3. Step 3: Cross multiply
    3,928.92x = 5,861.91 × 3,134.58
  4. Step 4: Simplify right side
    3,928.92x = 18,374,625.85
  5. Step 5: Solve for x
    x = 18,374,625.85/3,928.92
  6. Step 6: Final answer
    x = 4,676.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.