Home / 7,964.80-11,944.77-2,120.65

Finding the Fourth Proportional to 7,964.80, 11,944.77 and 2,120.65

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Solution

The fourth proportional to 7,964.80, 11,944.77 and 2,120.65 is: 3,180.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.80 : 11,944.77 = 2,120.65 : x
  2. Step 2: Convert to fraction form
    7,964.80/11,944.77 = 2,120.65/x
  3. Step 3: Cross multiply
    7,964.80x = 11,944.77 × 2,120.65
  4. Step 4: Simplify right side
    7,964.80x = 25,330,638.69
  5. Step 5: Solve for x
    x = 25,330,638.69/7,964.80
  6. Step 6: Final answer
    x = 3,180.32

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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.