Home / 5,719.20-8,578.80-2,021.55

Finding the Fourth Proportional to 5,719.20, 8,578.80 and 2,021.55

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Solution

The fourth proportional to 5,719.20, 8,578.80 and 2,021.55 is: 3,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.20 : 8,578.80 = 2,021.55 : x
  2. Step 2: Convert to fraction form
    5,719.20/8,578.80 = 2,021.55/x
  3. Step 3: Cross multiply
    5,719.20x = 8,578.80 × 2,021.55
  4. Step 4: Simplify right side
    5,719.20x = 17,342,473.14
  5. Step 5: Solve for x
    x = 17,342,473.14/5,719.20
  6. Step 6: Final answer
    x = 3,032.33

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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.