Home / 3,221.28-4,454.31-2,556.98

Finding the Fourth Proportional to 3,221.28, 4,454.31 and 2,556.98

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Solution

The fourth proportional to 3,221.28, 4,454.31 and 2,556.98 is: 3,535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.28 : 4,454.31 = 2,556.98 : x
  2. Step 2: Convert to fraction form
    3,221.28/4,454.31 = 2,556.98/x
  3. Step 3: Cross multiply
    3,221.28x = 4,454.31 × 2,556.98
  4. Step 4: Simplify right side
    3,221.28x = 11,389,585.60
  5. Step 5: Solve for x
    x = 11,389,585.60/3,221.28
  6. Step 6: Final answer
    x = 3,535.73

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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.