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Finding the Third Proportional to 7,213.50 and 10,879

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Solution

The third proportional to 7,213.50 and 10,879 is: 16,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.50 : 10,879 = 10,879 : x
  2. Step 2: Convert to fraction form
    7,213.50/10,879 = 10,879/x
  3. Step 3: Cross multiply
    7,213.50x = 10,879 × 10,879
  4. Step 4: Simplify right side
    7,213.50x = 118,352,641
  5. Step 5: Solve for x
    x = 118,352,641/7,213.50
  6. Step 6: Final answer
    x = 16,407.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.