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Finding the Third Proportional to 8,464 and 12,688

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Solution

The third proportional to 8,464 and 12,688 is: 19,020.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,464 : 12,688 = 12,688 : x
  2. Step 2: Convert to fraction form
    8,464/12,688 = 12,688/x
  3. Step 3: Cross multiply
    8,464x = 12,688 × 12,688
  4. Step 4: Simplify right side
    8,464x = 160,985,344
  5. Step 5: Solve for x
    x = 160,985,344/8,464
  6. Step 6: Final answer
    x = 19,020.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.