Home / 2,198.82-3,033.45-1,442.40

Finding the Fourth Proportional to 2,198.82, 3,033.45 and 1,442.40

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Solution

The fourth proportional to 2,198.82, 3,033.45 and 1,442.40 is: 1,989.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.82 : 3,033.45 = 1,442.40 : x
  2. Step 2: Convert to fraction form
    2,198.82/3,033.45 = 1,442.40/x
  3. Step 3: Cross multiply
    2,198.82x = 3,033.45 × 1,442.40
  4. Step 4: Simplify right side
    2,198.82x = 4,375,448.28
  5. Step 5: Solve for x
    x = 4,375,448.28/2,198.82
  6. Step 6: Final answer
    x = 1,989.91

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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.