Home / 8,664.72-12,997.92-2,821.44

Finding the Fourth Proportional to 8,664.72, 12,997.92 and 2,821.44

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Solution

The fourth proportional to 8,664.72, 12,997.92 and 2,821.44 is: 4,232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.72 : 12,997.92 = 2,821.44 : x
  2. Step 2: Convert to fraction form
    8,664.72/12,997.92 = 2,821.44/x
  3. Step 3: Cross multiply
    8,664.72x = 12,997.92 × 2,821.44
  4. Step 4: Simplify right side
    8,664.72x = 36,672,851.40
  5. Step 5: Solve for x
    x = 36,672,851.40/8,664.72
  6. Step 6: Final answer
    x = 4,232.43

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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.