Home / 2,579.20-3,863.40-2,028.80

Finding the Fourth Proportional to 2,579.20, 3,863.40 and 2,028.80

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Solution

The fourth proportional to 2,579.20, 3,863.40 and 2,028.80 is: 3,038.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.20 : 3,863.40 = 2,028.80 : x
  2. Step 2: Convert to fraction form
    2,579.20/3,863.40 = 2,028.80/x
  3. Step 3: Cross multiply
    2,579.20x = 3,863.40 × 2,028.80
  4. Step 4: Simplify right side
    2,579.20x = 7,838,065.92
  5. Step 5: Solve for x
    x = 7,838,065.92/2,579.20
  6. Step 6: Final answer
    x = 3,038.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.