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Finding the Third Proportional to 6,784 and 7,758

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Solution

The third proportional to 6,784 and 7,758 is: 8,871.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,784 : 7,758 = 7,758 : x
  2. Step 2: Convert to fraction form
    6,784/7,758 = 7,758/x
  3. Step 3: Cross multiply
    6,784x = 7,758 × 7,758
  4. Step 4: Simplify right side
    6,784x = 60,186,564
  5. Step 5: Solve for x
    x = 60,186,564/6,784
  6. Step 6: Final answer
    x = 8,871.84

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.