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Finding the Fourth Proportional to 8,679.41, 13,016.42 and 3,132.03

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Solution

The fourth proportional to 8,679.41, 13,016.42 and 3,132.03 is: 4,697.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.41 : 13,016.42 = 3,132.03 : x
  2. Step 2: Convert to fraction form
    8,679.41/13,016.42 = 3,132.03/x
  3. Step 3: Cross multiply
    8,679.41x = 13,016.42 × 3,132.03
  4. Step 4: Simplify right side
    8,679.41x = 40,767,817.93
  5. Step 5: Solve for x
    x = 40,767,817.93/8,679.41
  6. Step 6: Final answer
    x = 4,697.07

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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.