Home / 3,421.91-4,722.71-2,540.22

Finding the Fourth Proportional to 3,421.91, 4,722.71 and 2,540.22

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Solution

The fourth proportional to 3,421.91, 4,722.71 and 2,540.22 is: 3,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.91 : 4,722.71 = 2,540.22 : x
  2. Step 2: Convert to fraction form
    3,421.91/4,722.71 = 2,540.22/x
  3. Step 3: Cross multiply
    3,421.91x = 4,722.71 × 2,540.22
  4. Step 4: Simplify right side
    3,421.91x = 11,996,709.70
  5. Step 5: Solve for x
    x = 11,996,709.70/3,421.91
  6. Step 6: Final answer
    x = 3,505.86

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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.