Home / 2,906.38-4,004.34-1,909.90

Finding the Fourth Proportional to 2,906.38, 4,004.34 and 1,909.90

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Solution

The fourth proportional to 2,906.38, 4,004.34 and 1,909.90 is: 2,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.38 : 4,004.34 = 1,909.90 : x
  2. Step 2: Convert to fraction form
    2,906.38/4,004.34 = 1,909.90/x
  3. Step 3: Cross multiply
    2,906.38x = 4,004.34 × 1,909.90
  4. Step 4: Simplify right side
    2,906.38x = 7,647,888.97
  5. Step 5: Solve for x
    x = 7,647,888.97/2,906.38
  6. Step 6: Final answer
    x = 2,631.41

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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.