Home / 3,722.92-5,136.51-2,129.50

Finding the Fourth Proportional to 3,722.92, 5,136.51 and 2,129.50

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Solution

The fourth proportional to 3,722.92, 5,136.51 and 2,129.50 is: 2,938.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.92 : 5,136.51 = 2,129.50 : x
  2. Step 2: Convert to fraction form
    3,722.92/5,136.51 = 2,129.50/x
  3. Step 3: Cross multiply
    3,722.92x = 5,136.51 × 2,129.50
  4. Step 4: Simplify right side
    3,722.92x = 10,938,198.05
  5. Step 5: Solve for x
    x = 10,938,198.05/3,722.92
  6. Step 6: Final answer
    x = 2,938.07

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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.