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Finding the Fourth Proportional to 8,620.48, 12,927.99 and 2,775.73

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Solution

The fourth proportional to 8,620.48, 12,927.99 and 2,775.73 is: 4,162.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.48 : 12,927.99 = 2,775.73 : x
  2. Step 2: Convert to fraction form
    8,620.48/12,927.99 = 2,775.73/x
  3. Step 3: Cross multiply
    8,620.48x = 12,927.99 × 2,775.73
  4. Step 4: Simplify right side
    8,620.48x = 35,884,571.75
  5. Step 5: Solve for x
    x = 35,884,571.75/8,620.48
  6. Step 6: Final answer
    x = 4,162.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.