Home / 3,945.64-5,442.26-3,199.64

Finding the Fourth Proportional to 3,945.64, 5,442.26 and 3,199.64

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Solution

The fourth proportional to 3,945.64, 5,442.26 and 3,199.64 is: 4,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.64 : 5,442.26 = 3,199.64 : x
  2. Step 2: Convert to fraction form
    3,945.64/5,442.26 = 3,199.64/x
  3. Step 3: Cross multiply
    3,945.64x = 5,442.26 × 3,199.64
  4. Step 4: Simplify right side
    3,945.64x = 17,413,272.79
  5. Step 5: Solve for x
    x = 17,413,272.79/3,945.64
  6. Step 6: Final answer
    x = 4,413.29

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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.