Home / 2,122.30-3,183.60-1,198.29

Finding the Fourth Proportional to 2,122.30, 3,183.60 and 1,198.29

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Solution

The fourth proportional to 2,122.30, 3,183.60 and 1,198.29 is: 1,797.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.30 : 3,183.60 = 1,198.29 : x
  2. Step 2: Convert to fraction form
    2,122.30/3,183.60 = 1,198.29/x
  3. Step 3: Cross multiply
    2,122.30x = 3,183.60 × 1,198.29
  4. Step 4: Simplify right side
    2,122.30x = 3,814,892.48
  5. Step 5: Solve for x
    x = 3,814,892.48/2,122.30
  6. Step 6: Final answer
    x = 1,797.53

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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.