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Finding the Fourth Proportional to 3,868.92, 5,756.85 and 3,855.96

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Solution

The fourth proportional to 3,868.92, 5,756.85 and 3,855.96 is: 5,737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.92 : 5,756.85 = 3,855.96 : x
  2. Step 2: Convert to fraction form
    3,868.92/5,756.85 = 3,855.96/x
  3. Step 3: Cross multiply
    3,868.92x = 5,756.85 × 3,855.96
  4. Step 4: Simplify right side
    3,868.92x = 22,198,183.33
  5. Step 5: Solve for x
    x = 22,198,183.33/3,868.92
  6. Step 6: Final answer
    x = 5,737.57

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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.