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Finding the Fourth Proportional to 8,809.72, 13,215.94 and 2,965.87

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Solution

The fourth proportional to 8,809.72, 13,215.94 and 2,965.87 is: 4,449.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.72 : 13,215.94 = 2,965.87 : x
  2. Step 2: Convert to fraction form
    8,809.72/13,215.94 = 2,965.87/x
  3. Step 3: Cross multiply
    8,809.72x = 13,215.94 × 2,965.87
  4. Step 4: Simplify right side
    8,809.72x = 39,196,759.97
  5. Step 5: Solve for x
    x = 39,196,759.97/8,809.72
  6. Step 6: Final answer
    x = 4,449.26

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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.