Home / 3,214.20-4,823.64-2,120.88

Finding the Fourth Proportional to 3,214.20, 4,823.64 and 2,120.88

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Solution

The fourth proportional to 3,214.20, 4,823.64 and 2,120.88 is: 3,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.20 : 4,823.64 = 2,120.88 : x
  2. Step 2: Convert to fraction form
    3,214.20/4,823.64 = 2,120.88/x
  3. Step 3: Cross multiply
    3,214.20x = 4,823.64 × 2,120.88
  4. Step 4: Simplify right side
    3,214.20x = 10,230,361.60
  5. Step 5: Solve for x
    x = 10,230,361.60/3,214.20
  6. Step 6: Final answer
    x = 3,182.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.