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Finding the Third Proportional to 7,688 and 10,888

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Solution

The third proportional to 7,688 and 10,888 is: 15,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688 : 10,888 = 10,888 : x
  2. Step 2: Convert to fraction form
    7,688/10,888 = 10,888/x
  3. Step 3: Cross multiply
    7,688x = 10,888 × 10,888
  4. Step 4: Simplify right side
    7,688x = 118,548,544
  5. Step 5: Solve for x
    x = 118,548,544/7,688
  6. Step 6: Final answer
    x = 15,419.95

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.