Home / 11,857.22-17,772.34-3,957.88

Finding the Fourth Proportional to 11,857.22, 17,772.34 and 3,957.88

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Solution

The fourth proportional to 11,857.22, 17,772.34 and 3,957.88 is: 5,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,857.22 : 17,772.34 = 3,957.88 : x
  2. Step 2: Convert to fraction form
    11,857.22/17,772.34 = 3,957.88/x
  3. Step 3: Cross multiply
    11,857.22x = 17,772.34 × 3,957.88
  4. Step 4: Simplify right side
    11,857.22x = 70,340,789.04
  5. Step 5: Solve for x
    x = 70,340,789.04/11,857.22
  6. Step 6: Final answer
    x = 5,932.32

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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.