Home / 2,979.60-4,467.15-1,519.80

Finding the Fourth Proportional to 2,979.60, 4,467.15 and 1,519.80

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Solution

The fourth proportional to 2,979.60, 4,467.15 and 1,519.80 is: 2,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.60 : 4,467.15 = 1,519.80 : x
  2. Step 2: Convert to fraction form
    2,979.60/4,467.15 = 1,519.80/x
  3. Step 3: Cross multiply
    2,979.60x = 4,467.15 × 1,519.80
  4. Step 4: Simplify right side
    2,979.60x = 6,789,174.57
  5. Step 5: Solve for x
    x = 6,789,174.57/2,979.60
  6. Step 6: Final answer
    x = 2,278.55

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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.