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Finding the Fourth Proportional to 8,506.80, 12,759.84 and 2,663.28

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Solution

The fourth proportional to 8,506.80, 12,759.84 and 2,663.28 is: 3,994.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506.80 : 12,759.84 = 2,663.28 : x
  2. Step 2: Convert to fraction form
    8,506.80/12,759.84 = 2,663.28/x
  3. Step 3: Cross multiply
    8,506.80x = 12,759.84 × 2,663.28
  4. Step 4: Simplify right side
    8,506.80x = 33,983,026.68
  5. Step 5: Solve for x
    x = 33,983,026.68/8,506.80
  6. Step 6: Final answer
    x = 3,994.81

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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.