Home / 3,289.28-4,909.92-2,874.09

Finding the Fourth Proportional to 3,289.28, 4,909.92 and 2,874.09

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Solution

The fourth proportional to 3,289.28, 4,909.92 and 2,874.09 is: 4,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.28 : 4,909.92 = 2,874.09 : x
  2. Step 2: Convert to fraction form
    3,289.28/4,909.92 = 2,874.09/x
  3. Step 3: Cross multiply
    3,289.28x = 4,909.92 × 2,874.09
  4. Step 4: Simplify right side
    3,289.28x = 14,111,551.97
  5. Step 5: Solve for x
    x = 14,111,551.97/3,289.28
  6. Step 6: Final answer
    x = 4,290.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.