Home / 3,422.80-5,109.44-3,007.61

Finding the Fourth Proportional to 3,422.80, 5,109.44 and 3,007.61

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Solution

The fourth proportional to 3,422.80, 5,109.44 and 3,007.61 is: 4,489.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.80 : 5,109.44 = 3,007.61 : x
  2. Step 2: Convert to fraction form
    3,422.80/5,109.44 = 3,007.61/x
  3. Step 3: Cross multiply
    3,422.80x = 5,109.44 × 3,007.61
  4. Step 4: Simplify right side
    3,422.80x = 15,367,187.80
  5. Step 5: Solve for x
    x = 15,367,187.80/3,422.80
  6. Step 6: Final answer
    x = 4,489.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.