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Finding the Third Proportional to 8,484 and 12,869

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Solution

The third proportional to 8,484 and 12,869 is: 19,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484 : 12,869 = 12,869 : x
  2. Step 2: Convert to fraction form
    8,484/12,869 = 12,869/x
  3. Step 3: Cross multiply
    8,484x = 12,869 × 12,869
  4. Step 4: Simplify right side
    8,484x = 165,611,161
  5. Step 5: Solve for x
    x = 165,611,161/8,484
  6. Step 6: Final answer
    x = 19,520.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.