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Finding the Fourth Proportional to 3,512.81, 4,847.27 and 1,940.81

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Solution

The fourth proportional to 3,512.81, 4,847.27 and 1,940.81 is: 2,678.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.81 : 4,847.27 = 1,940.81 : x
  2. Step 2: Convert to fraction form
    3,512.81/4,847.27 = 1,940.81/x
  3. Step 3: Cross multiply
    3,512.81x = 4,847.27 × 1,940.81
  4. Step 4: Simplify right side
    3,512.81x = 9,407,620.38
  5. Step 5: Solve for x
    x = 9,407,620.38/3,512.81
  6. Step 6: Final answer
    x = 2,678.09

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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.