Home / 2,722.43-3,764.50-2,161.91

Finding the Fourth Proportional to 2,722.43, 3,764.50 and 2,161.91

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Solution

The fourth proportional to 2,722.43, 3,764.50 and 2,161.91 is: 2,989.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.43 : 3,764.50 = 2,161.91 : x
  2. Step 2: Convert to fraction form
    2,722.43/3,764.50 = 2,161.91/x
  3. Step 3: Cross multiply
    2,722.43x = 3,764.50 × 2,161.91
  4. Step 4: Simplify right side
    2,722.43x = 8,138,514.20
  5. Step 5: Solve for x
    x = 8,138,514.20/2,722.43
  6. Step 6: Final answer
    x = 2,989.43

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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.