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Finding the Fourth Proportional to 1,936, 2,671.68 and 1,108

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Solution

The fourth proportional to 1,936, 2,671.68 and 1,108 is: 1,529.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936 : 2,671.68 = 1,108 : x
  2. Step 2: Convert to fraction form
    1,936/2,671.68 = 1,108/x
  3. Step 3: Cross multiply
    1,936x = 2,671.68 × 1,108
  4. Step 4: Simplify right side
    1,936x = 2,960,221.44
  5. Step 5: Solve for x
    x = 2,960,221.44/1,936
  6. Step 6: Final answer
    x = 1,529.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.