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Finding the Fourth Proportional to 8,687.70, 13,026.69 and 2,843.82

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Solution

The fourth proportional to 8,687.70, 13,026.69 and 2,843.82 is: 4,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.70 : 13,026.69 = 2,843.82 : x
  2. Step 2: Convert to fraction form
    8,687.70/13,026.69 = 2,843.82/x
  3. Step 3: Cross multiply
    8,687.70x = 13,026.69 × 2,843.82
  4. Step 4: Simplify right side
    8,687.70x = 37,045,561.56
  5. Step 5: Solve for x
    x = 37,045,561.56/8,687.70
  6. Step 6: Final answer
    x = 4,264.14

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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.