Home / 3,977.28-5,488.70-2,209.05

Finding the Fourth Proportional to 3,977.28, 5,488.70 and 2,209.05

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Solution

The fourth proportional to 3,977.28, 5,488.70 and 2,209.05 is: 3,048.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.28 : 5,488.70 = 2,209.05 : x
  2. Step 2: Convert to fraction form
    3,977.28/5,488.70 = 2,209.05/x
  3. Step 3: Cross multiply
    3,977.28x = 5,488.70 × 2,209.05
  4. Step 4: Simplify right side
    3,977.28x = 12,124,801.69
  5. Step 5: Solve for x
    x = 12,124,801.69/3,977.28
  6. Step 6: Final answer
    x = 3,048.52

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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.