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Finding the Third Proportional to 8,620 and 11,364

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Solution

The third proportional to 8,620 and 11,364 is: 14,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620 : 11,364 = 11,364 : x
  2. Step 2: Convert to fraction form
    8,620/11,364 = 11,364/x
  3. Step 3: Cross multiply
    8,620x = 11,364 × 11,364
  4. Step 4: Simplify right side
    8,620x = 129,140,496
  5. Step 5: Solve for x
    x = 129,140,496/8,620
  6. Step 6: Final answer
    x = 14,981.50

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.