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Finding the Fourth Proportional to 9,791.10, 14,723.10 and 8,187.30

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Solution

The fourth proportional to 9,791.10, 14,723.10 and 8,187.30 is: 12,311.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,791.10 : 14,723.10 = 8,187.30 : x
  2. Step 2: Convert to fraction form
    9,791.10/14,723.10 = 8,187.30/x
  3. Step 3: Cross multiply
    9,791.10x = 14,723.10 × 8,187.30
  4. Step 4: Simplify right side
    9,791.10x = 120,542,436.63
  5. Step 5: Solve for x
    x = 120,542,436.63/9,791.10
  6. Step 6: Final answer
    x = 12,311.43

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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.