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Finding the Fourth Proportional to 8,451.56, 12,679.10 and 3,258.92

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Solution

The fourth proportional to 8,451.56, 12,679.10 and 3,258.92 is: 4,889.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.56 : 12,679.10 = 3,258.92 : x
  2. Step 2: Convert to fraction form
    8,451.56/12,679.10 = 3,258.92/x
  3. Step 3: Cross multiply
    8,451.56x = 12,679.10 × 3,258.92
  4. Step 4: Simplify right side
    8,451.56x = 41,320,172.57
  5. Step 5: Solve for x
    x = 41,320,172.57/8,451.56
  6. Step 6: Final answer
    x = 4,889.06

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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.