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Finding the Fourth Proportional to 8,694.81, 13,042.80 and 4,311.09

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Solution

The fourth proportional to 8,694.81, 13,042.80 and 4,311.09 is: 6,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.81 : 13,042.80 = 4,311.09 : x
  2. Step 2: Convert to fraction form
    8,694.81/13,042.80 = 4,311.09/x
  3. Step 3: Cross multiply
    8,694.81x = 13,042.80 × 4,311.09
  4. Step 4: Simplify right side
    8,694.81x = 56,228,684.65
  5. Step 5: Solve for x
    x = 56,228,684.65/8,694.81
  6. Step 6: Final answer
    x = 6,466.93

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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.