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Finding the Fourth Proportional to 3,906.54, 5,870.75 and 1,960.11

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Solution

The fourth proportional to 3,906.54, 5,870.75 and 1,960.11 is: 2,945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.54 : 5,870.75 = 1,960.11 : x
  2. Step 2: Convert to fraction form
    3,906.54/5,870.75 = 1,960.11/x
  3. Step 3: Cross multiply
    3,906.54x = 5,870.75 × 1,960.11
  4. Step 4: Simplify right side
    3,906.54x = 11,507,305.98
  5. Step 5: Solve for x
    x = 11,507,305.98/3,906.54
  6. Step 6: Final answer
    x = 2,945.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.