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Finding the Third Proportional to 8,178 and 11,700

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Solution

The third proportional to 8,178 and 11,700 is: 16,738.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178 : 11,700 = 11,700 : x
  2. Step 2: Convert to fraction form
    8,178/11,700 = 11,700/x
  3. Step 3: Cross multiply
    8,178x = 11,700 × 11,700
  4. Step 4: Simplify right side
    8,178x = 136,890,000
  5. Step 5: Solve for x
    x = 136,890,000/8,178
  6. Step 6: Final answer
    x = 16,738.81

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.