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Finding the Fourth Proportional to 1,906.78, 2,860.74 and 796.73

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Solution

The fourth proportional to 1,906.78, 2,860.74 and 796.73 is: 1,195.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.78 : 2,860.74 = 796.73 : x
  2. Step 2: Convert to fraction form
    1,906.78/2,860.74 = 796.73/x
  3. Step 3: Cross multiply
    1,906.78x = 2,860.74 × 796.73
  4. Step 4: Simplify right side
    1,906.78x = 2,279,237.38
  5. Step 5: Solve for x
    x = 2,279,237.38/1,906.78
  6. Step 6: Final answer
    x = 1,195.34

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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.