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Finding the Fourth Proportional to 3,516.54, 4,850.13 and 3,138.78

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Solution

The fourth proportional to 3,516.54, 4,850.13 and 3,138.78 is: 4,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,516.54 : 4,850.13 = 3,138.78 : x
  2. Step 2: Convert to fraction form
    3,516.54/4,850.13 = 3,138.78/x
  3. Step 3: Cross multiply
    3,516.54x = 4,850.13 × 3,138.78
  4. Step 4: Simplify right side
    3,516.54x = 15,223,491.04
  5. Step 5: Solve for x
    x = 15,223,491.04/3,516.54
  6. Step 6: Final answer
    x = 4,329.11

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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.