Home / 3,221.97-4,442.79-2,798.57

Finding the Fourth Proportional to 3,221.97, 4,442.79 and 2,798.57

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Solution

The fourth proportional to 3,221.97, 4,442.79 and 2,798.57 is: 3,858.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.97 : 4,442.79 = 2,798.57 : x
  2. Step 2: Convert to fraction form
    3,221.97/4,442.79 = 2,798.57/x
  3. Step 3: Cross multiply
    3,221.97x = 4,442.79 × 2,798.57
  4. Step 4: Simplify right side
    3,221.97x = 12,433,436.60
  5. Step 5: Solve for x
    x = 12,433,436.60/3,221.97
  6. Step 6: Final answer
    x = 3,858.95

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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.