Home / 3,679.60-5,512.20-2,214.40

Finding the Fourth Proportional to 3,679.60, 5,512.20 and 2,214.40

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Solution

The fourth proportional to 3,679.60, 5,512.20 and 2,214.40 is: 3,317.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.60 : 5,512.20 = 2,214.40 : x
  2. Step 2: Convert to fraction form
    3,679.60/5,512.20 = 2,214.40/x
  3. Step 3: Cross multiply
    3,679.60x = 5,512.20 × 2,214.40
  4. Step 4: Simplify right side
    3,679.60x = 12,206,215.68
  5. Step 5: Solve for x
    x = 12,206,215.68/3,679.60
  6. Step 6: Final answer
    x = 3,317.27

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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.