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Finding the Fourth Proportional to 8,181, 12,271.23 and 2,634.66

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Solution

The fourth proportional to 8,181, 12,271.23 and 2,634.66 is: 3,951.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181 : 12,271.23 = 2,634.66 : x
  2. Step 2: Convert to fraction form
    8,181/12,271.23 = 2,634.66/x
  3. Step 3: Cross multiply
    8,181x = 12,271.23 × 2,634.66
  4. Step 4: Simplify right side
    8,181x = 32,330,518.83
  5. Step 5: Solve for x
    x = 32,330,518.83/8,181
  6. Step 6: Final answer
    x = 3,951.90

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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.