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Finding the Fourth Proportional to 8,336.69, 12,506.75 and 2,790.09

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Solution

The fourth proportional to 8,336.69, 12,506.75 and 2,790.09 is: 4,185.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,336.69 : 12,506.75 = 2,790.09 : x
  2. Step 2: Convert to fraction form
    8,336.69/12,506.75 = 2,790.09/x
  3. Step 3: Cross multiply
    8,336.69x = 12,506.75 × 2,790.09
  4. Step 4: Simplify right side
    8,336.69x = 34,894,944.16
  5. Step 5: Solve for x
    x = 34,894,944.16/8,336.69
  6. Step 6: Final answer
    x = 4,185.71

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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.