Home / 2,209.55-3,049.19-1,214.80

Finding the Fourth Proportional to 2,209.55, 3,049.19 and 1,214.80

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Solution

The fourth proportional to 2,209.55, 3,049.19 and 1,214.80 is: 1,676.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.55 : 3,049.19 = 1,214.80 : x
  2. Step 2: Convert to fraction form
    2,209.55/3,049.19 = 1,214.80/x
  3. Step 3: Cross multiply
    2,209.55x = 3,049.19 × 1,214.80
  4. Step 4: Simplify right side
    2,209.55x = 3,704,170.86
  5. Step 5: Solve for x
    x = 3,704,170.86/2,209.55
  6. Step 6: Final answer
    x = 1,676.44

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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.