Home / 4,025-5,556.78-3,138.92

Finding the Fourth Proportional to 4,025, 5,556.78 and 3,138.92

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Solution

The fourth proportional to 4,025, 5,556.78 and 3,138.92 is: 4,333.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,025 : 5,556.78 = 3,138.92 : x
  2. Step 2: Convert to fraction form
    4,025/5,556.78 = 3,138.92/x
  3. Step 3: Cross multiply
    4,025x = 5,556.78 × 3,138.92
  4. Step 4: Simplify right side
    4,025x = 17,442,287.88
  5. Step 5: Solve for x
    x = 17,442,287.88/4,025
  6. Step 6: Final answer
    x = 4,333.49

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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.