Home / 3,940.30-5,436.24-2,260.54

Finding the Fourth Proportional to 3,940.30, 5,436.24 and 2,260.54

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Solution

The fourth proportional to 3,940.30, 5,436.24 and 2,260.54 is: 3,118.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.30 : 5,436.24 = 2,260.54 : x
  2. Step 2: Convert to fraction form
    3,940.30/5,436.24 = 2,260.54/x
  3. Step 3: Cross multiply
    3,940.30x = 5,436.24 × 2,260.54
  4. Step 4: Simplify right side
    3,940.30x = 12,288,837.97
  5. Step 5: Solve for x
    x = 12,288,837.97/3,940.30
  6. Step 6: Final answer
    x = 3,118.76

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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.