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Finding the Third Proportional to 7,431.75 and 9,907.31

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Solution

The third proportional to 7,431.75 and 9,907.31 is: 13,207.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.75 : 9,907.31 = 9,907.31 : x
  2. Step 2: Convert to fraction form
    7,431.75/9,907.31 = 9,907.31/x
  3. Step 3: Cross multiply
    7,431.75x = 9,907.31 × 9,907.31
  4. Step 4: Simplify right side
    7,431.75x = 98,154,840.97
  5. Step 5: Solve for x
    x = 98,154,840.97/7,431.75
  6. Step 6: Final answer
    x = 13,207.50

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.