Home / 3,198.95-4,410.78-2,191.15

Finding the Fourth Proportional to 3,198.95, 4,410.78 and 2,191.15

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Solution

The fourth proportional to 3,198.95, 4,410.78 and 2,191.15 is: 3,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.95 : 4,410.78 = 2,191.15 : x
  2. Step 2: Convert to fraction form
    3,198.95/4,410.78 = 2,191.15/x
  3. Step 3: Cross multiply
    3,198.95x = 4,410.78 × 2,191.15
  4. Step 4: Simplify right side
    3,198.95x = 9,664,658.54
  5. Step 5: Solve for x
    x = 9,664,658.54/3,198.95
  6. Step 6: Final answer
    x = 3,021.20

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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.