Home / 3,991.47-5,508.22-2,313.85

Finding the Fourth Proportional to 3,991.47, 5,508.22 and 2,313.85

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Solution

The fourth proportional to 3,991.47, 5,508.22 and 2,313.85 is: 3,193.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.47 : 5,508.22 = 2,313.85 : x
  2. Step 2: Convert to fraction form
    3,991.47/5,508.22 = 2,313.85/x
  3. Step 3: Cross multiply
    3,991.47x = 5,508.22 × 2,313.85
  4. Step 4: Simplify right side
    3,991.47x = 12,745,183.97
  5. Step 5: Solve for x
    x = 12,745,183.97/3,991.47
  6. Step 6: Final answer
    x = 3,193.11

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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.