Home / 3,181.35-4,390.82-2,002.80

Finding the Fourth Proportional to 3,181.35, 4,390.82 and 2,002.80

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Solution

The fourth proportional to 3,181.35, 4,390.82 and 2,002.80 is: 2,764.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.35 : 4,390.82 = 2,002.80 : x
  2. Step 2: Convert to fraction form
    3,181.35/4,390.82 = 2,002.80/x
  3. Step 3: Cross multiply
    3,181.35x = 4,390.82 × 2,002.80
  4. Step 4: Simplify right side
    3,181.35x = 8,793,934.30
  5. Step 5: Solve for x
    x = 8,793,934.30/3,181.35
  6. Step 6: Final answer
    x = 2,764.21

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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.