Home / 3,722.20-5,137.27-2,151.21

Finding the Fourth Proportional to 3,722.20, 5,137.27 and 2,151.21

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Solution

The fourth proportional to 3,722.20, 5,137.27 and 2,151.21 is: 2,969.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.20 : 5,137.27 = 2,151.21 : x
  2. Step 2: Convert to fraction form
    3,722.20/5,137.27 = 2,151.21/x
  3. Step 3: Cross multiply
    3,722.20x = 5,137.27 × 2,151.21
  4. Step 4: Simplify right side
    3,722.20x = 11,051,343.69
  5. Step 5: Solve for x
    x = 11,051,343.69/3,722.20
  6. Step 6: Final answer
    x = 2,969.03

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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.