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Finding the Third Proportional to 3,120 and 5,816

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Solution

The third proportional to 3,120 and 5,816 is: 10,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120 : 5,816 = 5,816 : x
  2. Step 2: Convert to fraction form
    3,120/5,816 = 5,816/x
  3. Step 3: Cross multiply
    3,120x = 5,816 × 5,816
  4. Step 4: Simplify right side
    3,120x = 33,825,856
  5. Step 5: Solve for x
    x = 33,825,856/3,120
  6. Step 6: Final answer
    x = 10,841.62

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.