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Finding the Third Proportional to 3,155 and 3,569

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Solution

The third proportional to 3,155 and 3,569 is: 4,037.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155 : 3,569 = 3,569 : x
  2. Step 2: Convert to fraction form
    3,155/3,569 = 3,569/x
  3. Step 3: Cross multiply
    3,155x = 3,569 × 3,569
  4. Step 4: Simplify right side
    3,155x = 12,737,761
  5. Step 5: Solve for x
    x = 12,737,761/3,155
  6. Step 6: Final answer
    x = 4,037.33

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.