Home / 3,198.75-4,788.90-2,865.30

Finding the Fourth Proportional to 3,198.75, 4,788.90 and 2,865.30

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Solution

The fourth proportional to 3,198.75, 4,788.90 and 2,865.30 is: 4,289.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.75 : 4,788.90 = 2,865.30 : x
  2. Step 2: Convert to fraction form
    3,198.75/4,788.90 = 2,865.30/x
  3. Step 3: Cross multiply
    3,198.75x = 4,788.90 × 2,865.30
  4. Step 4: Simplify right side
    3,198.75x = 13,721,635.17
  5. Step 5: Solve for x
    x = 13,721,635.17/3,198.75
  6. Step 6: Final answer
    x = 4,289.69

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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.