Home / 3,131.47-4,327.19-2,245.87

Finding the Fourth Proportional to 3,131.47, 4,327.19 and 2,245.87

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Solution

The fourth proportional to 3,131.47, 4,327.19 and 2,245.87 is: 3,103.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.47 : 4,327.19 = 2,245.87 : x
  2. Step 2: Convert to fraction form
    3,131.47/4,327.19 = 2,245.87/x
  3. Step 3: Cross multiply
    3,131.47x = 4,327.19 × 2,245.87
  4. Step 4: Simplify right side
    3,131.47x = 9,718,306.21
  5. Step 5: Solve for x
    x = 9,718,306.21/3,131.47
  6. Step 6: Final answer
    x = 3,103.43

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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.