Home / 2,198.11-3,298.38-900.49

Finding the Fourth Proportional to 2,198.11, 3,298.38 and 900.49

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Solution

The fourth proportional to 2,198.11, 3,298.38 and 900.49 is: 1,351.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.11 : 3,298.38 = 900.49 : x
  2. Step 2: Convert to fraction form
    2,198.11/3,298.38 = 900.49/x
  3. Step 3: Cross multiply
    2,198.11x = 3,298.38 × 900.49
  4. Step 4: Simplify right side
    2,198.11x = 2,970,137.21
  5. Step 5: Solve for x
    x = 2,970,137.21/2,198.11
  6. Step 6: Final answer
    x = 1,351.23

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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.