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Finding the Third Proportional to 6,442 and 7,405

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Solution

The third proportional to 6,442 and 7,405 is: 8,511.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442 : 7,405 = 7,405 : x
  2. Step 2: Convert to fraction form
    6,442/7,405 = 7,405/x
  3. Step 3: Cross multiply
    6,442x = 7,405 × 7,405
  4. Step 4: Simplify right side
    6,442x = 54,834,025
  5. Step 5: Solve for x
    x = 54,834,025/6,442
  6. Step 6: Final answer
    x = 8,511.96

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.