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Finding the Third Proportional to 7,189.50 and 12,759

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Solution

The third proportional to 7,189.50 and 12,759 is: 22,643.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.50 : 12,759 = 12,759 : x
  2. Step 2: Convert to fraction form
    7,189.50/12,759 = 12,759/x
  3. Step 3: Cross multiply
    7,189.50x = 12,759 × 12,759
  4. Step 4: Simplify right side
    7,189.50x = 162,792,081
  5. Step 5: Solve for x
    x = 162,792,081/7,189.50
  6. Step 6: Final answer
    x = 22,643.03

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.