Home / 3,221.28-4,451.22-2,590.56

Finding the Fourth Proportional to 3,221.28, 4,451.22 and 2,590.56

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Solution

The fourth proportional to 3,221.28, 4,451.22 and 2,590.56 is: 3,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.28 : 4,451.22 = 2,590.56 : x
  2. Step 2: Convert to fraction form
    3,221.28/4,451.22 = 2,590.56/x
  3. Step 3: Cross multiply
    3,221.28x = 4,451.22 × 2,590.56
  4. Step 4: Simplify right side
    3,221.28x = 11,531,152.48
  5. Step 5: Solve for x
    x = 11,531,152.48/3,221.28
  6. Step 6: Final answer
    x = 3,579.68

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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.