Home / 7,964.19-11,944.80-2,121.30

Finding the Fourth Proportional to 7,964.19, 11,944.80 and 2,121.30

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Solution

The fourth proportional to 7,964.19, 11,944.80 and 2,121.30 is: 3,181.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.19 : 11,944.80 = 2,121.30 : x
  2. Step 2: Convert to fraction form
    7,964.19/11,944.80 = 2,121.30/x
  3. Step 3: Cross multiply
    7,964.19x = 11,944.80 × 2,121.30
  4. Step 4: Simplify right side
    7,964.19x = 25,338,504.24
  5. Step 5: Solve for x
    x = 25,338,504.24/7,964.19
  6. Step 6: Final answer
    x = 3,181.55

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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.