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Finding the Third Proportional to 5,872 and 7,984

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Solution

The third proportional to 5,872 and 7,984 is: 10,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,872 : 7,984 = 7,984 : x
  2. Step 2: Convert to fraction form
    5,872/7,984 = 7,984/x
  3. Step 3: Cross multiply
    5,872x = 7,984 × 7,984
  4. Step 4: Simplify right side
    5,872x = 63,744,256
  5. Step 5: Solve for x
    x = 63,744,256/5,872
  6. Step 6: Final answer
    x = 10,855.63

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.