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Finding the Third Proportional to 3,945 and 5,909.50

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Solution

The third proportional to 3,945 and 5,909.50 is: 8,852.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945 : 5,909.50 = 5,909.50 : x
  2. Step 2: Convert to fraction form
    3,945/5,909.50 = 5,909.50/x
  3. Step 3: Cross multiply
    3,945x = 5,909.50 × 5,909.50
  4. Step 4: Simplify right side
    3,945x = 34,922,190.25
  5. Step 5: Solve for x
    x = 34,922,190.25/3,945
  6. Step 6: Final answer
    x = 8,852.27

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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.