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Finding the Third Proportional to 5,816 and 8,688

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Solution

The third proportional to 5,816 and 8,688 is: 12,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,816 : 8,688 = 8,688 : x
  2. Step 2: Convert to fraction form
    5,816/8,688 = 8,688/x
  3. Step 3: Cross multiply
    5,816x = 8,688 × 8,688
  4. Step 4: Simplify right side
    5,816x = 75,481,344
  5. Step 5: Solve for x
    x = 75,481,344/5,816
  6. Step 6: Final answer
    x = 12,978.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.