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Finding the Third Proportional to 4,617 and 7,879.50

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Solution

The third proportional to 4,617 and 7,879.50 is: 13,447.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,617 : 7,879.50 = 7,879.50 : x
  2. Step 2: Convert to fraction form
    4,617/7,879.50 = 7,879.50/x
  3. Step 3: Cross multiply
    4,617x = 7,879.50 × 7,879.50
  4. Step 4: Simplify right side
    4,617x = 62,086,520.25
  5. Step 5: Solve for x
    x = 62,086,520.25/4,617
  6. Step 6: Final answer
    x = 13,447.37

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.