Home / 3,198.48-4,406.88-2,148.72

Finding the Fourth Proportional to 3,198.48, 4,406.88 and 2,148.72

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Solution

The fourth proportional to 3,198.48, 4,406.88 and 2,148.72 is: 2,960.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.48 : 4,406.88 = 2,148.72 : x
  2. Step 2: Convert to fraction form
    3,198.48/4,406.88 = 2,148.72/x
  3. Step 3: Cross multiply
    3,198.48x = 4,406.88 × 2,148.72
  4. Step 4: Simplify right side
    3,198.48x = 9,469,151.19
  5. Step 5: Solve for x
    x = 9,469,151.19/3,198.48
  6. Step 6: Final answer
    x = 2,960.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.