Home / 3,118.96-4,304.14-1,721.71

Finding the Fourth Proportional to 3,118.96, 4,304.14 and 1,721.71

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Solution

The fourth proportional to 3,118.96, 4,304.14 and 1,721.71 is: 2,375.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.96 : 4,304.14 = 1,721.71 : x
  2. Step 2: Convert to fraction form
    3,118.96/4,304.14 = 1,721.71/x
  3. Step 3: Cross multiply
    3,118.96x = 4,304.14 × 1,721.71
  4. Step 4: Simplify right side
    3,118.96x = 7,410,480.88
  5. Step 5: Solve for x
    x = 7,410,480.88/3,118.96
  6. Step 6: Final answer
    x = 2,375.95

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1.5x scale

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.