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Finding the Fourth Proportional to 3,793.62, 5,235.12 and 2,221.68

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Solution

The fourth proportional to 3,793.62, 5,235.12 and 2,221.68 is: 3,065.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,793.62 : 5,235.12 = 2,221.68 : x
  2. Step 2: Convert to fraction form
    3,793.62/5,235.12 = 2,221.68/x
  3. Step 3: Cross multiply
    3,793.62x = 5,235.12 × 2,221.68
  4. Step 4: Simplify right side
    3,793.62x = 11,630,761.40
  5. Step 5: Solve for x
    x = 11,630,761.40/3,793.62
  6. Step 6: Final answer
    x = 3,065.87

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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.