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Finding the Fourth Proportional to 3,681.92, 5,081.12 and 2,025.92

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Solution

The fourth proportional to 3,681.92, 5,081.12 and 2,025.92 is: 2,795.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.92 : 5,081.12 = 2,025.92 : x
  2. Step 2: Convert to fraction form
    3,681.92/5,081.12 = 2,025.92/x
  3. Step 3: Cross multiply
    3,681.92x = 5,081.12 × 2,025.92
  4. Step 4: Simplify right side
    3,681.92x = 10,293,942.63
  5. Step 5: Solve for x
    x = 10,293,942.63/3,681.92
  6. Step 6: Final answer
    x = 2,795.81

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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.