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Finding the Third Proportional to 5,590 and 7,969

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Solution

The third proportional to 5,590 and 7,969 is: 11,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590 : 7,969 = 7,969 : x
  2. Step 2: Convert to fraction form
    5,590/7,969 = 7,969/x
  3. Step 3: Cross multiply
    5,590x = 7,969 × 7,969
  4. Step 4: Simplify right side
    5,590x = 63,504,961
  5. Step 5: Solve for x
    x = 63,504,961/5,590
  6. Step 6: Final answer
    x = 11,360.46

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.