Home / 7,979.64-11,964.90-2,431.34

Finding the Fourth Proportional to 7,979.64, 11,964.90 and 2,431.34

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Solution

The fourth proportional to 7,979.64, 11,964.90 and 2,431.34 is: 3,645.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.64 : 11,964.90 = 2,431.34 : x
  2. Step 2: Convert to fraction form
    7,979.64/11,964.90 = 2,431.34/x
  3. Step 3: Cross multiply
    7,979.64x = 11,964.90 × 2,431.34
  4. Step 4: Simplify right side
    7,979.64x = 29,090,739.97
  5. Step 5: Solve for x
    x = 29,090,739.97/7,979.64
  6. Step 6: Final answer
    x = 3,645.62

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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.