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Finding the Third Proportional to 3,891.75 and 5,671.13

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Solution

The third proportional to 3,891.75 and 5,671.13 is: 8,264.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.75 : 5,671.13 = 5,671.13 : x
  2. Step 2: Convert to fraction form
    3,891.75/5,671.13 = 5,671.13/x
  3. Step 3: Cross multiply
    3,891.75x = 5,671.13 × 5,671.13
  4. Step 4: Simplify right side
    3,891.75x = 32,161,658.77
  5. Step 5: Solve for x
    x = 32,161,658.77/3,891.75
  6. Step 6: Final answer
    x = 8,264.06

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.