Home / 2,919.62-4,028.46-2,124.20

Finding the Fourth Proportional to 2,919.62, 4,028.46 and 2,124.20

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Solution

The fourth proportional to 2,919.62, 4,028.46 and 2,124.20 is: 2,930.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.62 : 4,028.46 = 2,124.20 : x
  2. Step 2: Convert to fraction form
    2,919.62/4,028.46 = 2,124.20/x
  3. Step 3: Cross multiply
    2,919.62x = 4,028.46 × 2,124.20
  4. Step 4: Simplify right side
    2,919.62x = 8,557,254.73
  5. Step 5: Solve for x
    x = 8,557,254.73/2,919.62
  6. Step 6: Final answer
    x = 2,930.95

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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.