Home / 2,908.62-4,015.80-2,208.78

Finding the Fourth Proportional to 2,908.62, 4,015.80 and 2,208.78

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Solution

The fourth proportional to 2,908.62, 4,015.80 and 2,208.78 is: 3,049.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.62 : 4,015.80 = 2,208.78 : x
  2. Step 2: Convert to fraction form
    2,908.62/4,015.80 = 2,208.78/x
  3. Step 3: Cross multiply
    2,908.62x = 4,015.80 × 2,208.78
  4. Step 4: Simplify right side
    2,908.62x = 8,870,018.72
  5. Step 5: Solve for x
    x = 8,870,018.72/2,908.62
  6. Step 6: Final answer
    x = 3,049.56

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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.