Home / 7,439.32-11,163.84-3,979

Finding the Fourth Proportional to 7,439.32, 11,163.84 and 3,979

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Solution

The fourth proportional to 7,439.32, 11,163.84 and 3,979 is: 5,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.32 : 11,163.84 = 3,979 : x
  2. Step 2: Convert to fraction form
    7,439.32/11,163.84 = 3,979/x
  3. Step 3: Cross multiply
    7,439.32x = 11,163.84 × 3,979
  4. Step 4: Simplify right side
    7,439.32x = 44,420,919.36
  5. Step 5: Solve for x
    x = 44,420,919.36/7,439.32
  6. Step 6: Final answer
    x = 5,971.10

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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.