Home / 3,278.80-4,920.60-2,182.80

Finding the Fourth Proportional to 3,278.80, 4,920.60 and 2,182.80

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Solution

The fourth proportional to 3,278.80, 4,920.60 and 2,182.80 is: 3,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.80 : 4,920.60 = 2,182.80 : x
  2. Step 2: Convert to fraction form
    3,278.80/4,920.60 = 2,182.80/x
  3. Step 3: Cross multiply
    3,278.80x = 4,920.60 × 2,182.80
  4. Step 4: Simplify right side
    3,278.80x = 10,740,685.68
  5. Step 5: Solve for x
    x = 10,740,685.68/3,278.80
  6. Step 6: Final answer
    x = 3,275.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.