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Finding the Fourth Proportional to 8,481.78, 12,723.48 and 2,636.82

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Solution

The fourth proportional to 8,481.78, 12,723.48 and 2,636.82 is: 3,955.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.78 : 12,723.48 = 2,636.82 : x
  2. Step 2: Convert to fraction form
    8,481.78/12,723.48 = 2,636.82/x
  3. Step 3: Cross multiply
    8,481.78x = 12,723.48 × 2,636.82
  4. Step 4: Simplify right side
    8,481.78x = 33,549,526.53
  5. Step 5: Solve for x
    x = 33,549,526.53/8,481.78
  6. Step 6: Final answer
    x = 3,955.48

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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.