Home / 3,422.21-4,722.68-2,163.84

Finding the Fourth Proportional to 3,422.21, 4,722.68 and 2,163.84

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Solution

The fourth proportional to 3,422.21, 4,722.68 and 2,163.84 is: 2,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.21 : 4,722.68 = 2,163.84 : x
  2. Step 2: Convert to fraction form
    3,422.21/4,722.68 = 2,163.84/x
  3. Step 3: Cross multiply
    3,422.21x = 4,722.68 × 2,163.84
  4. Step 4: Simplify right side
    3,422.21x = 10,219,089.46
  5. Step 5: Solve for x
    x = 10,219,089.46/3,422.21
  6. Step 6: Final answer
    x = 2,986.11

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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.