Home / 3,020.78-4,529.30-1,979.52

Finding the Fourth Proportional to 3,020.78, 4,529.30 and 1,979.52

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Solution

The fourth proportional to 3,020.78, 4,529.30 and 1,979.52 is: 2,968.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.78 : 4,529.30 = 1,979.52 : x
  2. Step 2: Convert to fraction form
    3,020.78/4,529.30 = 1,979.52/x
  3. Step 3: Cross multiply
    3,020.78x = 4,529.30 × 1,979.52
  4. Step 4: Simplify right side
    3,020.78x = 8,965,839.94
  5. Step 5: Solve for x
    x = 8,965,839.94/3,020.78
  6. Step 6: Final answer
    x = 2,968.05

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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.