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Finding the Third Proportional to 4,245 and 4,879.50

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Solution

The third proportional to 4,245 and 4,879.50 is: 5,608.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,245 : 4,879.50 = 4,879.50 : x
  2. Step 2: Convert to fraction form
    4,245/4,879.50 = 4,879.50/x
  3. Step 3: Cross multiply
    4,245x = 4,879.50 × 4,879.50
  4. Step 4: Simplify right side
    4,245x = 23,809,520.25
  5. Step 5: Solve for x
    x = 23,809,520.25/4,245
  6. Step 6: Final answer
    x = 5,608.84

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.