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Finding the Third Proportional to 5,318 and 6,913

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Solution

The third proportional to 5,318 and 6,913 is: 8,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318 : 6,913 = 6,913 : x
  2. Step 2: Convert to fraction form
    5,318/6,913 = 6,913/x
  3. Step 3: Cross multiply
    5,318x = 6,913 × 6,913
  4. Step 4: Simplify right side
    5,318x = 47,789,569
  5. Step 5: Solve for x
    x = 47,789,569/5,318
  6. Step 6: Final answer
    x = 8,986.38

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.