Home / 3,179.82-4,378.20-2,888.22

Finding the Fourth Proportional to 3,179.82, 4,378.20 and 2,888.22

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Solution

The fourth proportional to 3,179.82, 4,378.20 and 2,888.22 is: 3,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.82 : 4,378.20 = 2,888.22 : x
  2. Step 2: Convert to fraction form
    3,179.82/4,378.20 = 2,888.22/x
  3. Step 3: Cross multiply
    3,179.82x = 4,378.20 × 2,888.22
  4. Step 4: Simplify right side
    3,179.82x = 12,645,204.80
  5. Step 5: Solve for x
    x = 12,645,204.80/3,179.82
  6. Step 6: Final answer
    x = 3,976.70

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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.