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Finding the Fourth Proportional to 8,543.11, 12,813.99 and 2,699.77

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Solution

The fourth proportional to 8,543.11, 12,813.99 and 2,699.77 is: 4,049.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.11 : 12,813.99 = 2,699.77 : x
  2. Step 2: Convert to fraction form
    8,543.11/12,813.99 = 2,699.77/x
  3. Step 3: Cross multiply
    8,543.11x = 12,813.99 × 2,699.77
  4. Step 4: Simplify right side
    8,543.11x = 34,594,825.78
  5. Step 5: Solve for x
    x = 34,594,825.78/8,543.11
  6. Step 6: Final answer
    x = 4,049.44

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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.