Home / 3,977.70-5,488.92-2,209.20

Finding the Fourth Proportional to 3,977.70, 5,488.92 and 2,209.20

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Solution

The fourth proportional to 3,977.70, 5,488.92 and 2,209.20 is: 3,048.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.70 : 5,488.92 = 2,209.20 : x
  2. Step 2: Convert to fraction form
    3,977.70/5,488.92 = 2,209.20/x
  3. Step 3: Cross multiply
    3,977.70x = 5,488.92 × 2,209.20
  4. Step 4: Simplify right side
    3,977.70x = 12,126,122.06
  5. Step 5: Solve for x
    x = 12,126,122.06/3,977.70
  6. Step 6: Final answer
    x = 3,048.53

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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.