Home / 3,198.46-4,405.05-2,756.20

Finding the Fourth Proportional to 3,198.46, 4,405.05 and 2,756.20

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Solution

The fourth proportional to 3,198.46, 4,405.05 and 2,756.20 is: 3,795.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.46 : 4,405.05 = 2,756.20 : x
  2. Step 2: Convert to fraction form
    3,198.46/4,405.05 = 2,756.20/x
  3. Step 3: Cross multiply
    3,198.46x = 4,405.05 × 2,756.20
  4. Step 4: Simplify right side
    3,198.46x = 12,141,198.81
  5. Step 5: Solve for x
    x = 12,141,198.81/3,198.46
  6. Step 6: Final answer
    x = 3,795.95

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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.