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Finding the Fourth Proportional to 8,543.41, 12,806.46 and 3,538.87

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Solution

The fourth proportional to 8,543.41, 12,806.46 and 3,538.87 is: 5,304.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.41 : 12,806.46 = 3,538.87 : x
  2. Step 2: Convert to fraction form
    8,543.41/12,806.46 = 3,538.87/x
  3. Step 3: Cross multiply
    8,543.41x = 12,806.46 × 3,538.87
  4. Step 4: Simplify right side
    8,543.41x = 45,320,365.08
  5. Step 5: Solve for x
    x = 45,320,365.08/8,543.41
  6. Step 6: Final answer
    x = 5,304.72

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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.