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Finding the Fourth Proportional to 1,936.88, 2,906.76 and 1,072.88

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Solution

The fourth proportional to 1,936.88, 2,906.76 and 1,072.88 is: 1,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.88 : 2,906.76 = 1,072.88 : x
  2. Step 2: Convert to fraction form
    1,936.88/2,906.76 = 1,072.88/x
  3. Step 3: Cross multiply
    1,936.88x = 2,906.76 × 1,072.88
  4. Step 4: Simplify right side
    1,936.88x = 3,118,604.67
  5. Step 5: Solve for x
    x = 3,118,604.67/1,936.88
  6. Step 6: Final answer
    x = 1,610.12

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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.