Home / 3,723-5,136.43-2,231.40

Finding the Fourth Proportional to 3,723, 5,136.43 and 2,231.40

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Solution

The fourth proportional to 3,723, 5,136.43 and 2,231.40 is: 3,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723 : 5,136.43 = 2,231.40 : x
  2. Step 2: Convert to fraction form
    3,723/5,136.43 = 2,231.40/x
  3. Step 3: Cross multiply
    3,723x = 5,136.43 × 2,231.40
  4. Step 4: Simplify right side
    3,723x = 11,461,429.90
  5. Step 5: Solve for x
    x = 11,461,429.90/3,723
  6. Step 6: Final answer
    x = 3,078.55

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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.