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Finding the Fourth Proportional to 3,879.93, 5,351.43 and 2,462.40

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Solution

The fourth proportional to 3,879.93, 5,351.43 and 2,462.40 is: 3,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.93 : 5,351.43 = 2,462.40 : x
  2. Step 2: Convert to fraction form
    3,879.93/5,351.43 = 2,462.40/x
  3. Step 3: Cross multiply
    3,879.93x = 5,351.43 × 2,462.40
  4. Step 4: Simplify right side
    3,879.93x = 13,177,361.23
  5. Step 5: Solve for x
    x = 13,177,361.23/3,879.93
  6. Step 6: Final answer
    x = 3,396.29

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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.