Home / 2,049.18-2,827.20-1,209.60

Finding the Fourth Proportional to 2,049.18, 2,827.20 and 1,209.60

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Solution

The fourth proportional to 2,049.18, 2,827.20 and 1,209.60 is: 1,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,049.18 : 2,827.20 = 1,209.60 : x
  2. Step 2: Convert to fraction form
    2,049.18/2,827.20 = 1,209.60/x
  3. Step 3: Cross multiply
    2,049.18x = 2,827.20 × 1,209.60
  4. Step 4: Simplify right side
    2,049.18x = 3,419,781.12
  5. Step 5: Solve for x
    x = 3,419,781.12/2,049.18
  6. Step 6: Final answer
    x = 1,668.85

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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.