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Finding the Third Proportional to 7,890.75 and 10,572.75

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Solution

The third proportional to 7,890.75 and 10,572.75 is: 14,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.75 : 10,572.75 = 10,572.75 : x
  2. Step 2: Convert to fraction form
    7,890.75/10,572.75 = 10,572.75/x
  3. Step 3: Cross multiply
    7,890.75x = 10,572.75 × 10,572.75
  4. Step 4: Simplify right side
    7,890.75x = 111,783,042.56
  5. Step 5: Solve for x
    x = 111,783,042.56/7,890.75
  6. Step 6: Final answer
    x = 14,166.34

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.