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Finding the Third Proportional to 7,818.56 and 11,520.94

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Solution

The third proportional to 7,818.56 and 11,520.94 is: 16,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.56 : 11,520.94 = 11,520.94 : x
  2. Step 2: Convert to fraction form
    7,818.56/11,520.94 = 11,520.94/x
  3. Step 3: Cross multiply
    7,818.56x = 11,520.94 × 11,520.94
  4. Step 4: Simplify right side
    7,818.56x = 132,732,000.88
  5. Step 5: Solve for x
    x = 132,732,000.88/7,818.56
  6. Step 6: Final answer
    x = 16,976.52

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.