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Finding the Third Proportional to 5,190.75 and 11,680.88

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Solution

The third proportional to 5,190.75 and 11,680.88 is: 26,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.75 : 11,680.88 = 11,680.88 : x
  2. Step 2: Convert to fraction form
    5,190.75/11,680.88 = 11,680.88/x
  3. Step 3: Cross multiply
    5,190.75x = 11,680.88 × 11,680.88
  4. Step 4: Simplify right side
    5,190.75x = 136,442,840.77
  5. Step 5: Solve for x
    x = 136,442,840.77/5,190.75
  6. Step 6: Final answer
    x = 26,285.77

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.