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Finding the Fourth Proportional to 3,912.52, 5,868.62 and 1,939.62

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Solution

The fourth proportional to 3,912.52, 5,868.62 and 1,939.62 is: 2,909.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.52 : 5,868.62 = 1,939.62 : x
  2. Step 2: Convert to fraction form
    3,912.52/5,868.62 = 1,939.62/x
  3. Step 3: Cross multiply
    3,912.52x = 5,868.62 × 1,939.62
  4. Step 4: Simplify right side
    3,912.52x = 11,382,892.72
  5. Step 5: Solve for x
    x = 11,382,892.72/3,912.52
  6. Step 6: Final answer
    x = 2,909.35

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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.