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Finding the Third Proportional to 7,384 and 12,620

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Solution

The third proportional to 7,384 and 12,620 is: 21,568.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,384 : 12,620 = 12,620 : x
  2. Step 2: Convert to fraction form
    7,384/12,620 = 12,620/x
  3. Step 3: Cross multiply
    7,384x = 12,620 × 12,620
  4. Step 4: Simplify right side
    7,384x = 159,264,400
  5. Step 5: Solve for x
    x = 159,264,400/7,384
  6. Step 6: Final answer
    x = 21,568.85

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.