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Finding the Fourth Proportional to 8,679.70, 13,015.65 and 2,754.91

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Solution

The fourth proportional to 8,679.70, 13,015.65 and 2,754.91 is: 4,131.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.70 : 13,015.65 = 2,754.91 : x
  2. Step 2: Convert to fraction form
    8,679.70/13,015.65 = 2,754.91/x
  3. Step 3: Cross multiply
    8,679.70x = 13,015.65 × 2,754.91
  4. Step 4: Simplify right side
    8,679.70x = 35,856,944.34
  5. Step 5: Solve for x
    x = 35,856,944.34/8,679.70
  6. Step 6: Final answer
    x = 4,131.13

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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.