Home / 3,882.96-5,358.87-2,391.21

Finding the Fourth Proportional to 3,882.96, 5,358.87 and 2,391.21

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Solution

The fourth proportional to 3,882.96, 5,358.87 and 2,391.21 is: 3,300.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.96 : 5,358.87 = 2,391.21 : x
  2. Step 2: Convert to fraction form
    3,882.96/5,358.87 = 2,391.21/x
  3. Step 3: Cross multiply
    3,882.96x = 5,358.87 × 2,391.21
  4. Step 4: Simplify right side
    3,882.96x = 12,814,183.53
  5. Step 5: Solve for x
    x = 12,814,183.53/3,882.96
  6. Step 6: Final answer
    x = 3,300.11

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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.