Home / 2,908.08-4,015.80-1,861.96

Finding the Fourth Proportional to 2,908.08, 4,015.80 and 1,861.96

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Solution

The fourth proportional to 2,908.08, 4,015.80 and 1,861.96 is: 2,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.08 : 4,015.80 = 1,861.96 : x
  2. Step 2: Convert to fraction form
    2,908.08/4,015.80 = 1,861.96/x
  3. Step 3: Cross multiply
    2,908.08x = 4,015.80 × 1,861.96
  4. Step 4: Simplify right side
    2,908.08x = 7,477,258.97
  5. Step 5: Solve for x
    x = 7,477,258.97/2,908.08
  6. Step 6: Final answer
    x = 2,571.20

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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.