Home / 3,131.25-4,691.94-2,543.40

Finding the Fourth Proportional to 3,131.25, 4,691.94 and 2,543.40

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Solution

The fourth proportional to 3,131.25, 4,691.94 and 2,543.40 is: 3,811.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.25 : 4,691.94 = 2,543.40 : x
  2. Step 2: Convert to fraction form
    3,131.25/4,691.94 = 2,543.40/x
  3. Step 3: Cross multiply
    3,131.25x = 4,691.94 × 2,543.40
  4. Step 4: Simplify right side
    3,131.25x = 11,933,480.20
  5. Step 5: Solve for x
    x = 11,933,480.20/3,131.25
  6. Step 6: Final answer
    x = 3,811.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.