Home / 3,850.16-5,313.22-2,081.78

Finding the Fourth Proportional to 3,850.16, 5,313.22 and 2,081.78

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Solution

The fourth proportional to 3,850.16, 5,313.22 and 2,081.78 is: 2,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.16 : 5,313.22 = 2,081.78 : x
  2. Step 2: Convert to fraction form
    3,850.16/5,313.22 = 2,081.78/x
  3. Step 3: Cross multiply
    3,850.16x = 5,313.22 × 2,081.78
  4. Step 4: Simplify right side
    3,850.16x = 11,060,923.36
  5. Step 5: Solve for x
    x = 11,060,923.36/3,850.16
  6. Step 6: Final answer
    x = 2,872.85

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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.