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Finding the Third Proportional to 7,656 and 9,958.50

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Solution

The third proportional to 7,656 and 9,958.50 is: 12,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,656 : 9,958.50 = 9,958.50 : x
  2. Step 2: Convert to fraction form
    7,656/9,958.50 = 9,958.50/x
  3. Step 3: Cross multiply
    7,656x = 9,958.50 × 9,958.50
  4. Step 4: Simplify right side
    7,656x = 99,171,722.25
  5. Step 5: Solve for x
    x = 99,171,722.25/7,656
  6. Step 6: Final answer
    x = 12,953.46

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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.