Home / 7,983.44-11,980.66-2,789.31

Finding the Fourth Proportional to 7,983.44, 11,980.66 and 2,789.31

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Solution

The fourth proportional to 7,983.44, 11,980.66 and 2,789.31 is: 4,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.44 : 11,980.66 = 2,789.31 : x
  2. Step 2: Convert to fraction form
    7,983.44/11,980.66 = 2,789.31/x
  3. Step 3: Cross multiply
    7,983.44x = 11,980.66 × 2,789.31
  4. Step 4: Simplify right side
    7,983.44x = 33,417,774.74
  5. Step 5: Solve for x
    x = 33,417,774.74/7,983.44
  6. Step 6: Final answer
    x = 4,185.89

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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.