Home / 3,977.83-5,489.53-2,209.57

Finding the Fourth Proportional to 3,977.83, 5,489.53 and 2,209.57

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Solution

The fourth proportional to 3,977.83, 5,489.53 and 2,209.57 is: 3,049.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.83 : 5,489.53 = 2,209.57 : x
  2. Step 2: Convert to fraction form
    3,977.83/5,489.53 = 2,209.57/x
  3. Step 3: Cross multiply
    3,977.83x = 5,489.53 × 2,209.57
  4. Step 4: Simplify right side
    3,977.83x = 12,129,500.80
  5. Step 5: Solve for x
    x = 12,129,500.80/3,977.83
  6. Step 6: Final answer
    x = 3,049.28

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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.