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Finding the Third Proportional to 2,860 and 4,006

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Solution

The third proportional to 2,860 and 4,006 is: 5,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860 : 4,006 = 4,006 : x
  2. Step 2: Convert to fraction form
    2,860/4,006 = 4,006/x
  3. Step 3: Cross multiply
    2,860x = 4,006 × 4,006
  4. Step 4: Simplify right side
    2,860x = 16,048,036
  5. Step 5: Solve for x
    x = 16,048,036/2,860
  6. Step 6: Final answer
    x = 5,611.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.