Home / 3,198.49-4,405.44-2,778.86

Finding the Fourth Proportional to 3,198.49, 4,405.44 and 2,778.86

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Solution

The fourth proportional to 3,198.49, 4,405.44 and 2,778.86 is: 3,827.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.49 : 4,405.44 = 2,778.86 : x
  2. Step 2: Convert to fraction form
    3,198.49/4,405.44 = 2,778.86/x
  3. Step 3: Cross multiply
    3,198.49x = 4,405.44 × 2,778.86
  4. Step 4: Simplify right side
    3,198.49x = 12,242,082.02
  5. Step 5: Solve for x
    x = 12,242,082.02/3,198.49
  6. Step 6: Final answer
    x = 3,827.46

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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.