Home / 2,450.78-3,382.12-1,331.71

Finding the Fourth Proportional to 2,450.78, 3,382.12 and 1,331.71

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Solution

The fourth proportional to 2,450.78, 3,382.12 and 1,331.71 is: 1,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,450.78 : 3,382.12 = 1,331.71 : x
  2. Step 2: Convert to fraction form
    2,450.78/3,382.12 = 1,331.71/x
  3. Step 3: Cross multiply
    2,450.78x = 3,382.12 × 1,331.71
  4. Step 4: Simplify right side
    2,450.78x = 4,504,003.92
  5. Step 5: Solve for x
    x = 4,504,003.92/2,450.78
  6. Step 6: Final answer
    x = 1,837.78

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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.