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Finding the Third Proportional to 7,485 and 10,879

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Solution

The third proportional to 7,485 and 10,879 is: 15,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485 : 10,879 = 10,879 : x
  2. Step 2: Convert to fraction form
    7,485/10,879 = 10,879/x
  3. Step 3: Cross multiply
    7,485x = 10,879 × 10,879
  4. Step 4: Simplify right side
    7,485x = 118,352,641
  5. Step 5: Solve for x
    x = 118,352,641/7,485
  6. Step 6: Final answer
    x = 15,811.98

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.