Home / 3,228.68-4,843.56-1,280.90

Finding the Fourth Proportional to 3,228.68, 4,843.56 and 1,280.90

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Solution

The fourth proportional to 3,228.68, 4,843.56 and 1,280.90 is: 1,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.68 : 4,843.56 = 1,280.90 : x
  2. Step 2: Convert to fraction form
    3,228.68/4,843.56 = 1,280.90/x
  3. Step 3: Cross multiply
    3,228.68x = 4,843.56 × 1,280.90
  4. Step 4: Simplify right side
    3,228.68x = 6,204,116.00
  5. Step 5: Solve for x
    x = 6,204,116.00/3,228.68
  6. Step 6: Final answer
    x = 1,921.56

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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.