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Finding the Fourth Proportional to 8,321.94, 12,481.48 and 2,774.70

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Solution

The fourth proportional to 8,321.94, 12,481.48 and 2,774.70 is: 4,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.94 : 12,481.48 = 2,774.70 : x
  2. Step 2: Convert to fraction form
    8,321.94/12,481.48 = 2,774.70/x
  3. Step 3: Cross multiply
    8,321.94x = 12,481.48 × 2,774.70
  4. Step 4: Simplify right side
    8,321.94x = 34,632,362.56
  5. Step 5: Solve for x
    x = 34,632,362.56/8,321.94
  6. Step 6: Final answer
    x = 4,161.57

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1.5x scale

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.