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Finding the Fourth Proportional to 3,181.82, 4,771.82 and 1,101.28

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Solution

The fourth proportional to 3,181.82, 4,771.82 and 1,101.28 is: 1,651.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.82 : 4,771.82 = 1,101.28 : x
  2. Step 2: Convert to fraction form
    3,181.82/4,771.82 = 1,101.28/x
  3. Step 3: Cross multiply
    3,181.82x = 4,771.82 × 1,101.28
  4. Step 4: Simplify right side
    3,181.82x = 5,255,109.93
  5. Step 5: Solve for x
    x = 5,255,109.93/3,181.82
  6. Step 6: Final answer
    x = 1,651.61

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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.