Home / 3,722.43-5,136.98-2,151.57

Finding the Fourth Proportional to 3,722.43, 5,136.98 and 2,151.57

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Solution

The fourth proportional to 3,722.43, 5,136.98 and 2,151.57 is: 2,969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.43 : 5,136.98 = 2,151.57 : x
  2. Step 2: Convert to fraction form
    3,722.43/5,136.98 = 2,151.57/x
  3. Step 3: Cross multiply
    3,722.43x = 5,136.98 × 2,151.57
  4. Step 4: Simplify right side
    3,722.43x = 11,052,561.30
  5. Step 5: Solve for x
    x = 11,052,561.30/3,722.43
  6. Step 6: Final answer
    x = 2,969.18

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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.