Home / 7,961.12-11,940.84-2,118.32

Finding the Fourth Proportional to 7,961.12, 11,940.84 and 2,118.32

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Solution

The fourth proportional to 7,961.12, 11,940.84 and 2,118.32 is: 3,177.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.12 : 11,940.84 = 2,118.32 : x
  2. Step 2: Convert to fraction form
    7,961.12/11,940.84 = 2,118.32/x
  3. Step 3: Cross multiply
    7,961.12x = 11,940.84 × 2,118.32
  4. Step 4: Simplify right side
    7,961.12x = 25,294,520.19
  5. Step 5: Solve for x
    x = 25,294,520.19/7,961.12
  6. Step 6: Final answer
    x = 3,177.26

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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.