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Finding the Third Proportional to 5,640 and 8,448

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Solution

The third proportional to 5,640 and 8,448 is: 12,654.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640 : 8,448 = 8,448 : x
  2. Step 2: Convert to fraction form
    5,640/8,448 = 8,448/x
  3. Step 3: Cross multiply
    5,640x = 8,448 × 8,448
  4. Step 4: Simplify right side
    5,640x = 71,368,704
  5. Step 5: Solve for x
    x = 71,368,704/5,640
  6. Step 6: Final answer
    x = 12,654.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.