Home / 7,835.72-11,745.90-3,221.96

Finding the Fourth Proportional to 7,835.72, 11,745.90 and 3,221.96

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Solution

The fourth proportional to 7,835.72, 11,745.90 and 3,221.96 is: 4,829.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,835.72 : 11,745.90 = 3,221.96 : x
  2. Step 2: Convert to fraction form
    7,835.72/11,745.90 = 3,221.96/x
  3. Step 3: Cross multiply
    7,835.72x = 11,745.90 × 3,221.96
  4. Step 4: Simplify right side
    7,835.72x = 37,844,819.96
  5. Step 5: Solve for x
    x = 37,844,819.96/7,835.72
  6. Step 6: Final answer
    x = 4,829.78

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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.