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Finding the Third Proportional to 6,400 and 9,004

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Solution

The third proportional to 6,400 and 9,004 is: 12,667.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400 : 9,004 = 9,004 : x
  2. Step 2: Convert to fraction form
    6,400/9,004 = 9,004/x
  3. Step 3: Cross multiply
    6,400x = 9,004 × 9,004
  4. Step 4: Simplify right side
    6,400x = 81,072,016
  5. Step 5: Solve for x
    x = 81,072,016/6,400
  6. Step 6: Final answer
    x = 12,667.50

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.