Home / 5,518.38-8,279.19-2,229.78

Finding the Fourth Proportional to 5,518.38, 8,279.19 and 2,229.78

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Solution

The fourth proportional to 5,518.38, 8,279.19 and 2,229.78 is: 3,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.38 : 8,279.19 = 2,229.78 : x
  2. Step 2: Convert to fraction form
    5,518.38/8,279.19 = 2,229.78/x
  3. Step 3: Cross multiply
    5,518.38x = 8,279.19 × 2,229.78
  4. Step 4: Simplify right side
    5,518.38x = 18,460,772.28
  5. Step 5: Solve for x
    x = 18,460,772.28/5,518.38
  6. Step 6: Final answer
    x = 3,345.32

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1.5x scale

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.