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Finding the Fourth Proportional to 8,855.70, 13,279.77 and 3,009.66

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Solution

The fourth proportional to 8,855.70, 13,279.77 and 3,009.66 is: 4,513.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.70 : 13,279.77 = 3,009.66 : x
  2. Step 2: Convert to fraction form
    8,855.70/13,279.77 = 3,009.66/x
  3. Step 3: Cross multiply
    8,855.70x = 13,279.77 × 3,009.66
  4. Step 4: Simplify right side
    8,855.70x = 39,967,592.58
  5. Step 5: Solve for x
    x = 39,967,592.58/8,855.70
  6. Step 6: Final answer
    x = 4,513.21

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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.