Home / 3,977.59-5,489.08-2,209.21

Finding the Fourth Proportional to 3,977.59, 5,489.08 and 2,209.21

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Solution

The fourth proportional to 3,977.59, 5,489.08 and 2,209.21 is: 3,048.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.59 : 5,489.08 = 2,209.21 : x
  2. Step 2: Convert to fraction form
    3,977.59/5,489.08 = 2,209.21/x
  3. Step 3: Cross multiply
    3,977.59x = 5,489.08 × 2,209.21
  4. Step 4: Simplify right side
    3,977.59x = 12,126,553.77
  5. Step 5: Solve for x
    x = 12,126,553.77/3,977.59
  6. Step 6: Final answer
    x = 3,048.72

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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.