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Finding the Fourth Proportional to 8,166.91, 11,269.09 and 4,809.87

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Solution

The fourth proportional to 8,166.91, 11,269.09 and 4,809.87 is: 6,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,166.91 : 11,269.09 = 4,809.87 : x
  2. Step 2: Convert to fraction form
    8,166.91/11,269.09 = 4,809.87/x
  3. Step 3: Cross multiply
    8,166.91x = 11,269.09 × 4,809.87
  4. Step 4: Simplify right side
    8,166.91x = 54,202,857.92
  5. Step 5: Solve for x
    x = 54,202,857.92/8,166.91
  6. Step 6: Final answer
    x = 6,636.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.