Home / 6,121.86-9,179.16-2,419.80

Finding the Fourth Proportional to 6,121.86, 9,179.16 and 2,419.80

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Solution

The fourth proportional to 6,121.86, 9,179.16 and 2,419.80 is: 3,628.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.86 : 9,179.16 = 2,419.80 : x
  2. Step 2: Convert to fraction form
    6,121.86/9,179.16 = 2,419.80/x
  3. Step 3: Cross multiply
    6,121.86x = 9,179.16 × 2,419.80
  4. Step 4: Simplify right side
    6,121.86x = 22,211,731.37
  5. Step 5: Solve for x
    x = 22,211,731.37/6,121.86
  6. Step 6: Final answer
    x = 3,628.27

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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.