Home / 3,721.29-5,136.04-2,781.79

Finding the Fourth Proportional to 3,721.29, 5,136.04 and 2,781.79

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Solution

The fourth proportional to 3,721.29, 5,136.04 and 2,781.79 is: 3,839.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.29 : 5,136.04 = 2,781.79 : x
  2. Step 2: Convert to fraction form
    3,721.29/5,136.04 = 2,781.79/x
  3. Step 3: Cross multiply
    3,721.29x = 5,136.04 × 2,781.79
  4. Step 4: Simplify right side
    3,721.29x = 14,287,359.03
  5. Step 5: Solve for x
    x = 14,287,359.03/3,721.29
  6. Step 6: Final answer
    x = 3,839.36

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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.