Home / 7,620.82-11,431.60-2,359.46

Finding the Fourth Proportional to 7,620.82, 11,431.60 and 2,359.46

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Solution

The fourth proportional to 7,620.82, 11,431.60 and 2,359.46 is: 3,539.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.82 : 11,431.60 = 2,359.46 : x
  2. Step 2: Convert to fraction form
    7,620.82/11,431.60 = 2,359.46/x
  3. Step 3: Cross multiply
    7,620.82x = 11,431.60 × 2,359.46
  4. Step 4: Simplify right side
    7,620.82x = 26,972,425.62
  5. Step 5: Solve for x
    x = 26,972,425.62/7,620.82
  6. Step 6: Final answer
    x = 3,539.31

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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.