Home / 2,198.72-3,298.19-1,224.09

Finding the Fourth Proportional to 2,198.72, 3,298.19 and 1,224.09

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Solution

The fourth proportional to 2,198.72, 3,298.19 and 1,224.09 is: 1,836.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.72 : 3,298.19 = 1,224.09 : x
  2. Step 2: Convert to fraction form
    2,198.72/3,298.19 = 1,224.09/x
  3. Step 3: Cross multiply
    2,198.72x = 3,298.19 × 1,224.09
  4. Step 4: Simplify right side
    2,198.72x = 4,037,275.28
  5. Step 5: Solve for x
    x = 4,037,275.28/2,198.72
  6. Step 6: Final answer
    x = 1,836.19

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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.