Home / 3,608.05-4,979.15-2,116.85

Finding the Fourth Proportional to 3,608.05, 4,979.15 and 2,116.85

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Solution

The fourth proportional to 3,608.05, 4,979.15 and 2,116.85 is: 2,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.05 : 4,979.15 = 2,116.85 : x
  2. Step 2: Convert to fraction form
    3,608.05/4,979.15 = 2,116.85/x
  3. Step 3: Cross multiply
    3,608.05x = 4,979.15 × 2,116.85
  4. Step 4: Simplify right side
    3,608.05x = 10,540,113.68
  5. Step 5: Solve for x
    x = 10,540,113.68/3,608.05
  6. Step 6: Final answer
    x = 2,921.28

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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.