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Finding the Fourth Proportional to 8,274.66, 12,405 and 3,591.15

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Solution

The fourth proportional to 8,274.66, 12,405 and 3,591.15 is: 5,383.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,274.66 : 12,405 = 3,591.15 : x
  2. Step 2: Convert to fraction form
    8,274.66/12,405 = 3,591.15/x
  3. Step 3: Cross multiply
    8,274.66x = 12,405 × 3,591.15
  4. Step 4: Simplify right side
    8,274.66x = 44,548,215.75
  5. Step 5: Solve for x
    x = 44,548,215.75/8,274.66
  6. Step 6: Final answer
    x = 5,383.69

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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.