Home / 3,179.28-4,388.88-2,002.08

Finding the Fourth Proportional to 3,179.28, 4,388.88 and 2,002.08

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Solution

The fourth proportional to 3,179.28, 4,388.88 and 2,002.08 is: 2,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.28 : 4,388.88 = 2,002.08 : x
  2. Step 2: Convert to fraction form
    3,179.28/4,388.88 = 2,002.08/x
  3. Step 3: Cross multiply
    3,179.28x = 4,388.88 × 2,002.08
  4. Step 4: Simplify right side
    3,179.28x = 8,786,888.87
  5. Step 5: Solve for x
    x = 8,786,888.87/3,179.28
  6. Step 6: Final answer
    x = 2,763.80

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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.