Home / 3,940.24-5,437.70-2,261.71

Finding the Fourth Proportional to 3,940.24, 5,437.70 and 2,261.71

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Solution

The fourth proportional to 3,940.24, 5,437.70 and 2,261.71 is: 3,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.24 : 5,437.70 = 2,261.71 : x
  2. Step 2: Convert to fraction form
    3,940.24/5,437.70 = 2,261.71/x
  3. Step 3: Cross multiply
    3,940.24x = 5,437.70 × 2,261.71
  4. Step 4: Simplify right side
    3,940.24x = 12,298,489.16
  5. Step 5: Solve for x
    x = 12,298,489.16/3,940.24
  6. Step 6: Final answer
    x = 3,121.26

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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.