Home / 7,990.65-11,979.09-3,059.37

Finding the Fourth Proportional to 7,990.65, 11,979.09 and 3,059.37

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Solution

The fourth proportional to 7,990.65, 11,979.09 and 3,059.37 is: 4,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.65 : 11,979.09 = 3,059.37 : x
  2. Step 2: Convert to fraction form
    7,990.65/11,979.09 = 3,059.37/x
  3. Step 3: Cross multiply
    7,990.65x = 11,979.09 × 3,059.37
  4. Step 4: Simplify right side
    7,990.65x = 36,648,468.57
  5. Step 5: Solve for x
    x = 36,648,468.57/7,990.65
  6. Step 6: Final answer
    x = 4,586.42

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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.