Home / 3,422.63-4,722.41-2,078.21

Finding the Fourth Proportional to 3,422.63, 4,722.41 and 2,078.21

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Solution

The fourth proportional to 3,422.63, 4,722.41 and 2,078.21 is: 2,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.63 : 4,722.41 = 2,078.21 : x
  2. Step 2: Convert to fraction form
    3,422.63/4,722.41 = 2,078.21/x
  3. Step 3: Cross multiply
    3,422.63x = 4,722.41 × 2,078.21
  4. Step 4: Simplify right side
    3,422.63x = 9,814,176.69
  5. Step 5: Solve for x
    x = 9,814,176.69/3,422.63
  6. Step 6: Final answer
    x = 2,867.44

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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.