Home / 2,198.79-3,298.10-1,028.36

Finding the Fourth Proportional to 2,198.79, 3,298.10 and 1,028.36

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Solution

The fourth proportional to 2,198.79, 3,298.10 and 1,028.36 is: 1,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.79 : 3,298.10 = 1,028.36 : x
  2. Step 2: Convert to fraction form
    2,198.79/3,298.10 = 1,028.36/x
  3. Step 3: Cross multiply
    2,198.79x = 3,298.10 × 1,028.36
  4. Step 4: Simplify right side
    2,198.79x = 3,391,634.12
  5. Step 5: Solve for x
    x = 3,391,634.12/2,198.79
  6. Step 6: Final answer
    x = 1,542.50

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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.