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Finding the Fourth Proportional to 3,850.38, 5,778.54 and 2,865.42

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Solution

The fourth proportional to 3,850.38, 5,778.54 and 2,865.42 is: 4,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.38 : 5,778.54 = 2,865.42 : x
  2. Step 2: Convert to fraction form
    3,850.38/5,778.54 = 2,865.42/x
  3. Step 3: Cross multiply
    3,850.38x = 5,778.54 × 2,865.42
  4. Step 4: Simplify right side
    3,850.38x = 16,557,944.09
  5. Step 5: Solve for x
    x = 16,557,944.09/3,850.38
  6. Step 6: Final answer
    x = 4,300.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.