Home / 2,660.61-3,989.55-1,198.97

Finding the Fourth Proportional to 2,660.61, 3,989.55 and 1,198.97

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Solution

The fourth proportional to 2,660.61, 3,989.55 and 1,198.97 is: 1,797.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.61 : 3,989.55 = 1,198.97 : x
  2. Step 2: Convert to fraction form
    2,660.61/3,989.55 = 1,198.97/x
  3. Step 3: Cross multiply
    2,660.61x = 3,989.55 × 1,198.97
  4. Step 4: Simplify right side
    2,660.61x = 4,783,350.27
  5. Step 5: Solve for x
    x = 4,783,350.27/2,660.61
  6. Step 6: Final answer
    x = 1,797.84

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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.