Home / 3,079.20-4,249.26-1,681.95

Finding the Fourth Proportional to 3,079.20, 4,249.26 and 1,681.95

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Solution

The fourth proportional to 3,079.20, 4,249.26 and 1,681.95 is: 2,321.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.20 : 4,249.26 = 1,681.95 : x
  2. Step 2: Convert to fraction form
    3,079.20/4,249.26 = 1,681.95/x
  3. Step 3: Cross multiply
    3,079.20x = 4,249.26 × 1,681.95
  4. Step 4: Simplify right side
    3,079.20x = 7,147,042.86
  5. Step 5: Solve for x
    x = 7,147,042.86/3,079.20
  6. Step 6: Final answer
    x = 2,321.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.