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Finding the Fourth Proportional to 3,387.80, 4,673.80 and 2,208.44

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Solution

The fourth proportional to 3,387.80, 4,673.80 and 2,208.44 is: 3,046.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.80 : 4,673.80 = 2,208.44 : x
  2. Step 2: Convert to fraction form
    3,387.80/4,673.80 = 2,208.44/x
  3. Step 3: Cross multiply
    3,387.80x = 4,673.80 × 2,208.44
  4. Step 4: Simplify right side
    3,387.80x = 10,321,806.87
  5. Step 5: Solve for x
    x = 10,321,806.87/3,387.80
  6. Step 6: Final answer
    x = 3,046.76

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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.