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Finding the Fourth Proportional to 5,753.72, 8,629.97 and 1,857.21

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Solution

The fourth proportional to 5,753.72, 8,629.97 and 1,857.21 is: 2,785.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,753.72 : 8,629.97 = 1,857.21 : x
  2. Step 2: Convert to fraction form
    5,753.72/8,629.97 = 1,857.21/x
  3. Step 3: Cross multiply
    5,753.72x = 8,629.97 × 1,857.21
  4. Step 4: Simplify right side
    5,753.72x = 16,027,657.30
  5. Step 5: Solve for x
    x = 16,027,657.30/5,753.72
  6. Step 6: Final answer
    x = 2,785.62

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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.