Home / 3,078.38-4,247.24-1,819.54

Finding the Fourth Proportional to 3,078.38, 4,247.24 and 1,819.54

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Solution

The fourth proportional to 3,078.38, 4,247.24 and 1,819.54 is: 2,510.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.38 : 4,247.24 = 1,819.54 : x
  2. Step 2: Convert to fraction form
    3,078.38/4,247.24 = 1,819.54/x
  3. Step 3: Cross multiply
    3,078.38x = 4,247.24 × 1,819.54
  4. Step 4: Simplify right side
    3,078.38x = 7,728,023.07
  5. Step 5: Solve for x
    x = 7,728,023.07/3,078.38
  6. Step 6: Final answer
    x = 2,510.42

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.