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Finding the Third Proportional to 7,777 and 11,809.50

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Solution

The third proportional to 7,777 and 11,809.50 is: 17,932.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777 : 11,809.50 = 11,809.50 : x
  2. Step 2: Convert to fraction form
    7,777/11,809.50 = 11,809.50/x
  3. Step 3: Cross multiply
    7,777x = 11,809.50 × 11,809.50
  4. Step 4: Simplify right side
    7,777x = 139,464,290.25
  5. Step 5: Solve for x
    x = 139,464,290.25/7,777
  6. Step 6: Final answer
    x = 17,932.92

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.