Home / 3,940.16-5,437.92-2,261.84

Finding the Fourth Proportional to 3,940.16, 5,437.92 and 2,261.84

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Solution

The fourth proportional to 3,940.16, 5,437.92 and 2,261.84 is: 3,121.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.16 : 5,437.92 = 2,261.84 : x
  2. Step 2: Convert to fraction form
    3,940.16/5,437.92 = 2,261.84/x
  3. Step 3: Cross multiply
    3,940.16x = 5,437.92 × 2,261.84
  4. Step 4: Simplify right side
    3,940.16x = 12,299,704.97
  5. Step 5: Solve for x
    x = 12,299,704.97/3,940.16
  6. Step 6: Final answer
    x = 3,121.63

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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.