Home / 7,619.31-11,429.78-2,072.73

Finding the Fourth Proportional to 7,619.31, 11,429.78 and 2,072.73

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Solution

The fourth proportional to 7,619.31, 11,429.78 and 2,072.73 is: 3,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.31 : 11,429.78 = 2,072.73 : x
  2. Step 2: Convert to fraction form
    7,619.31/11,429.78 = 2,072.73/x
  3. Step 3: Cross multiply
    7,619.31x = 11,429.78 × 2,072.73
  4. Step 4: Simplify right side
    7,619.31x = 23,690,880.40
  5. Step 5: Solve for x
    x = 23,690,880.40/7,619.31
  6. Step 6: Final answer
    x = 3,109.32

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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.