Home / 3,721.08-5,136.36-2,149.68

Finding the Fourth Proportional to 3,721.08, 5,136.36 and 2,149.68

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Solution

The fourth proportional to 3,721.08, 5,136.36 and 2,149.68 is: 2,967.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.08 : 5,136.36 = 2,149.68 : x
  2. Step 2: Convert to fraction form
    3,721.08/5,136.36 = 2,149.68/x
  3. Step 3: Cross multiply
    3,721.08x = 5,136.36 × 2,149.68
  4. Step 4: Simplify right side
    3,721.08x = 11,041,530.36
  5. Step 5: Solve for x
    x = 11,041,530.36/3,721.08
  6. Step 6: Final answer
    x = 2,967.29

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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.