Home / 7,112.30-10,668.87-2,181.99

Finding the Fourth Proportional to 7,112.30, 10,668.87 and 2,181.99

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Solution

The fourth proportional to 7,112.30, 10,668.87 and 2,181.99 is: 3,273.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.30 : 10,668.87 = 2,181.99 : x
  2. Step 2: Convert to fraction form
    7,112.30/10,668.87 = 2,181.99/x
  3. Step 3: Cross multiply
    7,112.30x = 10,668.87 × 2,181.99
  4. Step 4: Simplify right side
    7,112.30x = 23,279,367.65
  5. Step 5: Solve for x
    x = 23,279,367.65/7,112.30
  6. Step 6: Final answer
    x = 3,273.11

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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.