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Finding the Third Proportional to 4,879.50 and 7,552.50

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Solution

The third proportional to 4,879.50 and 7,552.50 is: 11,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.50 : 7,552.50 = 7,552.50 : x
  2. Step 2: Convert to fraction form
    4,879.50/7,552.50 = 7,552.50/x
  3. Step 3: Cross multiply
    4,879.50x = 7,552.50 × 7,552.50
  4. Step 4: Simplify right side
    4,879.50x = 57,040,256.25
  5. Step 5: Solve for x
    x = 57,040,256.25/4,879.50
  6. Step 6: Final answer
    x = 11,689.77

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.