Home / 5,578.20-8,370.96-2,115.48

Finding the Fourth Proportional to 5,578.20, 8,370.96 and 2,115.48

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Solution

The fourth proportional to 5,578.20, 8,370.96 and 2,115.48 is: 3,174.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.20 : 8,370.96 = 2,115.48 : x
  2. Step 2: Convert to fraction form
    5,578.20/8,370.96 = 2,115.48/x
  3. Step 3: Cross multiply
    5,578.20x = 8,370.96 × 2,115.48
  4. Step 4: Simplify right side
    5,578.20x = 17,708,598.46
  5. Step 5: Solve for x
    x = 17,708,598.46/5,578.20
  6. Step 6: Final answer
    x = 3,174.61

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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.