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Finding the Fourth Proportional to 8,481.40, 12,726.74 and 3,287.48

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Solution

The fourth proportional to 8,481.40, 12,726.74 and 3,287.48 is: 4,933.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.40 : 12,726.74 = 3,287.48 : x
  2. Step 2: Convert to fraction form
    8,481.40/12,726.74 = 3,287.48/x
  3. Step 3: Cross multiply
    8,481.40x = 12,726.74 × 3,287.48
  4. Step 4: Simplify right side
    8,481.40x = 41,838,903.22
  5. Step 5: Solve for x
    x = 41,838,903.22/8,481.40
  6. Step 6: Final answer
    x = 4,933.02

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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.