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Finding the Fourth Proportional to 1,271.52, 1,910.03 and 1,076.92

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Solution

The fourth proportional to 1,271.52, 1,910.03 and 1,076.92 is: 1,617.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.52 : 1,910.03 = 1,076.92 : x
  2. Step 2: Convert to fraction form
    1,271.52/1,910.03 = 1,076.92/x
  3. Step 3: Cross multiply
    1,271.52x = 1,910.03 × 1,076.92
  4. Step 4: Simplify right side
    1,271.52x = 2,056,949.51
  5. Step 5: Solve for x
    x = 2,056,949.51/1,271.52
  6. Step 6: Final answer
    x = 1,617.71

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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.