Home / 8,115.44-12,174.84-2,921.36

Finding the Fourth Proportional to 8,115.44, 12,174.84 and 2,921.36

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Solution

The fourth proportional to 8,115.44, 12,174.84 and 2,921.36 is: 4,382.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.44 : 12,174.84 = 2,921.36 : x
  2. Step 2: Convert to fraction form
    8,115.44/12,174.84 = 2,921.36/x
  3. Step 3: Cross multiply
    8,115.44x = 12,174.84 × 2,921.36
  4. Step 4: Simplify right side
    8,115.44x = 35,567,090.58
  5. Step 5: Solve for x
    x = 35,567,090.58/8,115.44
  6. Step 6: Final answer
    x = 4,382.64

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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.