Home / 2,198.41-3,269.34-2,129.20

Finding the Fourth Proportional to 2,198.41, 3,269.34 and 2,129.20

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Solution

The fourth proportional to 2,198.41, 3,269.34 and 2,129.20 is: 3,166.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.41 : 3,269.34 = 2,129.20 : x
  2. Step 2: Convert to fraction form
    2,198.41/3,269.34 = 2,129.20/x
  3. Step 3: Cross multiply
    2,198.41x = 3,269.34 × 2,129.20
  4. Step 4: Simplify right side
    2,198.41x = 6,961,078.73
  5. Step 5: Solve for x
    x = 6,961,078.73/2,198.41
  6. Step 6: Final answer
    x = 3,166.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.