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Finding the Third Proportional to 4,292 and 6,689

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Solution

The third proportional to 4,292 and 6,689 is: 10,424.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,292 : 6,689 = 6,689 : x
  2. Step 2: Convert to fraction form
    4,292/6,689 = 6,689/x
  3. Step 3: Cross multiply
    4,292x = 6,689 × 6,689
  4. Step 4: Simplify right side
    4,292x = 44,742,721
  5. Step 5: Solve for x
    x = 44,742,721/4,292
  6. Step 6: Final answer
    x = 10,424.68

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.