Home / 6,281.96-9,419.90-2,121.16

Finding the Fourth Proportional to 6,281.96, 9,419.90 and 2,121.16

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Solution

The fourth proportional to 6,281.96, 9,419.90 and 2,121.16 is: 3,180.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,281.96 : 9,419.90 = 2,121.16 : x
  2. Step 2: Convert to fraction form
    6,281.96/9,419.90 = 2,121.16/x
  3. Step 3: Cross multiply
    6,281.96x = 9,419.90 × 2,121.16
  4. Step 4: Simplify right side
    6,281.96x = 19,981,115.08
  5. Step 5: Solve for x
    x = 19,981,115.08/6,281.96
  6. Step 6: Final answer
    x = 3,180.71

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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.