Home / 2,660.24-3,988.20-1,198.64

Finding the Fourth Proportional to 2,660.24, 3,988.20 and 1,198.64

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Solution

The fourth proportional to 2,660.24, 3,988.20 and 1,198.64 is: 1,796.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.24 : 3,988.20 = 1,198.64 : x
  2. Step 2: Convert to fraction form
    2,660.24/3,988.20 = 1,198.64/x
  3. Step 3: Cross multiply
    2,660.24x = 3,988.20 × 1,198.64
  4. Step 4: Simplify right side
    2,660.24x = 4,780,416.05
  5. Step 5: Solve for x
    x = 4,780,416.05/2,660.24
  6. Step 6: Final answer
    x = 1,796.99

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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.