Home / 3,198.12-4,418.91-2,540.76

Finding the Fourth Proportional to 3,198.12, 4,418.91 and 2,540.76

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Solution

The fourth proportional to 3,198.12, 4,418.91 and 2,540.76 is: 3,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.12 : 4,418.91 = 2,540.76 : x
  2. Step 2: Convert to fraction form
    3,198.12/4,418.91 = 2,540.76/x
  3. Step 3: Cross multiply
    3,198.12x = 4,418.91 × 2,540.76
  4. Step 4: Simplify right side
    3,198.12x = 11,227,389.77
  5. Step 5: Solve for x
    x = 11,227,389.77/3,198.12
  6. Step 6: Final answer
    x = 3,510.62

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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.