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Finding the Fourth Proportional to 1,937.75, 2,906.69 and 767.97

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Solution

The fourth proportional to 1,937.75, 2,906.69 and 767.97 is: 1,151.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.75 : 2,906.69 = 767.97 : x
  2. Step 2: Convert to fraction form
    1,937.75/2,906.69 = 767.97/x
  3. Step 3: Cross multiply
    1,937.75x = 2,906.69 × 767.97
  4. Step 4: Simplify right side
    1,937.75x = 2,232,246.88
  5. Step 5: Solve for x
    x = 2,232,246.88/1,937.75
  6. Step 6: Final answer
    x = 1,151.98

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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.