Home / 2,198.38-3,299.28-1,274.80

Finding the Fourth Proportional to 2,198.38, 3,299.28 and 1,274.80

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Solution

The fourth proportional to 2,198.38, 3,299.28 and 1,274.80 is: 1,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.38 : 3,299.28 = 1,274.80 : x
  2. Step 2: Convert to fraction form
    2,198.38/3,299.28 = 1,274.80/x
  3. Step 3: Cross multiply
    2,198.38x = 3,299.28 × 1,274.80
  4. Step 4: Simplify right side
    2,198.38x = 4,205,922.14
  5. Step 5: Solve for x
    x = 4,205,922.14/2,198.38
  6. Step 6: Final answer
    x = 1,913.19

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1.5x scale

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.