Home / 3,939.68-5,437.43-2,261.49

Finding the Fourth Proportional to 3,939.68, 5,437.43 and 2,261.49

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Solution

The fourth proportional to 3,939.68, 5,437.43 and 2,261.49 is: 3,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.68 : 5,437.43 = 2,261.49 : x
  2. Step 2: Convert to fraction form
    3,939.68/5,437.43 = 2,261.49/x
  3. Step 3: Cross multiply
    3,939.68x = 5,437.43 × 2,261.49
  4. Step 4: Simplify right side
    3,939.68x = 12,296,716.23
  5. Step 5: Solve for x
    x = 12,296,716.23/3,939.68
  6. Step 6: Final answer
    x = 3,121.25

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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.