Home / 2,872.44-3,965.88-2,208.12

Finding the Fourth Proportional to 2,872.44, 3,965.88 and 2,208.12

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Solution

The fourth proportional to 2,872.44, 3,965.88 and 2,208.12 is: 3,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.44 : 3,965.88 = 2,208.12 : x
  2. Step 2: Convert to fraction form
    2,872.44/3,965.88 = 2,208.12/x
  3. Step 3: Cross multiply
    2,872.44x = 3,965.88 × 2,208.12
  4. Step 4: Simplify right side
    2,872.44x = 8,757,138.95
  5. Step 5: Solve for x
    x = 8,757,138.95/2,872.44
  6. Step 6: Final answer
    x = 3,048.68

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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.