Home / 3,198.92-4,415.99-2,255.48

Finding the Fourth Proportional to 3,198.92, 4,415.99 and 2,255.48

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Solution

The fourth proportional to 3,198.92, 4,415.99 and 2,255.48 is: 3,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.92 : 4,415.99 = 2,255.48 : x
  2. Step 2: Convert to fraction form
    3,198.92/4,415.99 = 2,255.48/x
  3. Step 3: Cross multiply
    3,198.92x = 4,415.99 × 2,255.48
  4. Step 4: Simplify right side
    3,198.92x = 9,960,143.77
  5. Step 5: Solve for x
    x = 9,960,143.77/3,198.92
  6. Step 6: Final answer
    x = 3,113.60

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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.