Home / 5,719.78-8,578.12-2,021.52

Finding the Fourth Proportional to 5,719.78, 8,578.12 and 2,021.52

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Solution

The fourth proportional to 5,719.78, 8,578.12 and 2,021.52 is: 3,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.78 : 8,578.12 = 2,021.52 : x
  2. Step 2: Convert to fraction form
    5,719.78/8,578.12 = 2,021.52/x
  3. Step 3: Cross multiply
    5,719.78x = 8,578.12 × 2,021.52
  4. Step 4: Simplify right side
    5,719.78x = 17,340,836.09
  5. Step 5: Solve for x
    x = 17,340,836.09/5,719.78
  6. Step 6: Final answer
    x = 3,031.73

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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.