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Finding the Fourth Proportional to 3,792.64, 5,687.28 and 1,917.37

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Solution

The fourth proportional to 3,792.64, 5,687.28 and 1,917.37 is: 2,875.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,792.64 : 5,687.28 = 1,917.37 : x
  2. Step 2: Convert to fraction form
    3,792.64/5,687.28 = 1,917.37/x
  3. Step 3: Cross multiply
    3,792.64x = 5,687.28 × 1,917.37
  4. Step 4: Simplify right side
    3,792.64x = 10,904,620.05
  5. Step 5: Solve for x
    x = 10,904,620.05/3,792.64
  6. Step 6: Final answer
    x = 2,875.21

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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.