Home / 3,217.60-4,436.40-2,221.30

Finding the Fourth Proportional to 3,217.60, 4,436.40 and 2,221.30

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Solution

The fourth proportional to 3,217.60, 4,436.40 and 2,221.30 is: 3,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217.60 : 4,436.40 = 2,221.30 : x
  2. Step 2: Convert to fraction form
    3,217.60/4,436.40 = 2,221.30/x
  3. Step 3: Cross multiply
    3,217.60x = 4,436.40 × 2,221.30
  4. Step 4: Simplify right side
    3,217.60x = 9,854,575.32
  5. Step 5: Solve for x
    x = 9,854,575.32/3,217.60
  6. Step 6: Final answer
    x = 3,062.71

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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.