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Finding the Fourth Proportional to 3,912.52, 5,393.64 and 2,792.92

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Solution

The fourth proportional to 3,912.52, 5,393.64 and 2,792.92 is: 3,850.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.52 : 5,393.64 = 2,792.92 : x
  2. Step 2: Convert to fraction form
    3,912.52/5,393.64 = 2,792.92/x
  3. Step 3: Cross multiply
    3,912.52x = 5,393.64 × 2,792.92
  4. Step 4: Simplify right side
    3,912.52x = 15,064,005.03
  5. Step 5: Solve for x
    x = 15,064,005.03/3,912.52
  6. Step 6: Final answer
    x = 3,850.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.