Home / 3,850.87-5,313.85-2,171.83

Finding the Fourth Proportional to 3,850.87, 5,313.85 and 2,171.83

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Solution

The fourth proportional to 3,850.87, 5,313.85 and 2,171.83 is: 2,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.87 : 5,313.85 = 2,171.83 : x
  2. Step 2: Convert to fraction form
    3,850.87/5,313.85 = 2,171.83/x
  3. Step 3: Cross multiply
    3,850.87x = 5,313.85 × 2,171.83
  4. Step 4: Simplify right side
    3,850.87x = 11,540,778.85
  5. Step 5: Solve for x
    x = 11,540,778.85/3,850.87
  6. Step 6: Final answer
    x = 2,996.93

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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.