Home / 3,221.60-4,825.98-2,122.63

Finding the Fourth Proportional to 3,221.60, 4,825.98 and 2,122.63

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Solution

The fourth proportional to 3,221.60, 4,825.98 and 2,122.63 is: 3,179.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.60 : 4,825.98 = 2,122.63 : x
  2. Step 2: Convert to fraction form
    3,221.60/4,825.98 = 2,122.63/x
  3. Step 3: Cross multiply
    3,221.60x = 4,825.98 × 2,122.63
  4. Step 4: Simplify right side
    3,221.60x = 10,243,765.82
  5. Step 5: Solve for x
    x = 10,243,765.82/3,221.60
  6. Step 6: Final answer
    x = 3,179.72

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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.