Home / 7,985.97-11,979.45-2,439.32

Finding the Fourth Proportional to 7,985.97, 11,979.45 and 2,439.32

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Solution

The fourth proportional to 7,985.97, 11,979.45 and 2,439.32 is: 3,659.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.97 : 11,979.45 = 2,439.32 : x
  2. Step 2: Convert to fraction form
    7,985.97/11,979.45 = 2,439.32/x
  3. Step 3: Cross multiply
    7,985.97x = 11,979.45 × 2,439.32
  4. Step 4: Simplify right side
    7,985.97x = 29,221,652.08
  5. Step 5: Solve for x
    x = 29,221,652.08/7,985.97
  6. Step 6: Final answer
    x = 3,659.12

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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.