Home / 2,839.72-3,919.33-1,721.62

Finding the Fourth Proportional to 2,839.72, 3,919.33 and 1,721.62

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Solution

The fourth proportional to 2,839.72, 3,919.33 and 1,721.62 is: 2,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.72 : 3,919.33 = 1,721.62 : x
  2. Step 2: Convert to fraction form
    2,839.72/3,919.33 = 1,721.62/x
  3. Step 3: Cross multiply
    2,839.72x = 3,919.33 × 1,721.62
  4. Step 4: Simplify right side
    2,839.72x = 6,747,596.91
  5. Step 5: Solve for x
    x = 6,747,596.91/2,839.72
  6. Step 6: Final answer
    x = 2,376.15

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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.