Home / 2,212.20-3,052.68-1,217.34

Finding the Fourth Proportional to 2,212.20, 3,052.68 and 1,217.34

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Solution

The fourth proportional to 2,212.20, 3,052.68 and 1,217.34 is: 1,679.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.20 : 3,052.68 = 1,217.34 : x
  2. Step 2: Convert to fraction form
    2,212.20/3,052.68 = 1,217.34/x
  3. Step 3: Cross multiply
    2,212.20x = 3,052.68 × 1,217.34
  4. Step 4: Simplify right side
    2,212.20x = 3,716,149.47
  5. Step 5: Solve for x
    x = 3,716,149.47/2,212.20
  6. Step 6: Final answer
    x = 1,679.84

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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.