Home / 3,721.59-5,136.57-2,149.79

Finding the Fourth Proportional to 3,721.59, 5,136.57 and 2,149.79

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Solution

The fourth proportional to 3,721.59, 5,136.57 and 2,149.79 is: 2,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.59 : 5,136.57 = 2,149.79 : x
  2. Step 2: Convert to fraction form
    3,721.59/5,136.57 = 2,149.79/x
  3. Step 3: Cross multiply
    3,721.59x = 5,136.57 × 2,149.79
  4. Step 4: Simplify right side
    3,721.59x = 11,042,521.14
  5. Step 5: Solve for x
    x = 11,042,521.14/3,721.59
  6. Step 6: Final answer
    x = 2,967.15

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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.