Home / 2,081.18-3,121.07-675.27

Finding the Fourth Proportional to 2,081.18, 3,121.07 and 675.27

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Solution

The fourth proportional to 2,081.18, 3,121.07 and 675.27 is: 1,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.18 : 3,121.07 = 675.27 : x
  2. Step 2: Convert to fraction form
    2,081.18/3,121.07 = 675.27/x
  3. Step 3: Cross multiply
    2,081.18x = 3,121.07 × 675.27
  4. Step 4: Simplify right side
    2,081.18x = 2,107,549.33
  5. Step 5: Solve for x
    x = 2,107,549.33/2,081.18
  6. Step 6: Final answer
    x = 1,012.67

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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.