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Finding the Third Proportional to 6,784 and 7,520

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Solution

The third proportional to 6,784 and 7,520 is: 8,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,784 : 7,520 = 7,520 : x
  2. Step 2: Convert to fraction form
    6,784/7,520 = 7,520/x
  3. Step 3: Cross multiply
    6,784x = 7,520 × 7,520
  4. Step 4: Simplify right side
    6,784x = 56,550,400
  5. Step 5: Solve for x
    x = 56,550,400/6,784
  6. Step 6: Final answer
    x = 8,335.85

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.