Home / 2,979.80-4,102.78-2,530.73

Finding the Fourth Proportional to 2,979.80, 4,102.78 and 2,530.73

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Solution

The fourth proportional to 2,979.80, 4,102.78 and 2,530.73 is: 3,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.80 : 4,102.78 = 2,530.73 : x
  2. Step 2: Convert to fraction form
    2,979.80/4,102.78 = 2,530.73/x
  3. Step 3: Cross multiply
    2,979.80x = 4,102.78 × 2,530.73
  4. Step 4: Simplify right side
    2,979.80x = 10,383,028.43
  5. Step 5: Solve for x
    x = 10,383,028.43/2,979.80
  6. Step 6: Final answer
    x = 3,484.47

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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.