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Finding the Fourth Proportional to 3,092.60, 4,268.60 and 1,912.99

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Solution

The fourth proportional to 3,092.60, 4,268.60 and 1,912.99 is: 2,640.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,092.60 : 4,268.60 = 1,912.99 : x
  2. Step 2: Convert to fraction form
    3,092.60/4,268.60 = 1,912.99/x
  3. Step 3: Cross multiply
    3,092.60x = 4,268.60 × 1,912.99
  4. Step 4: Simplify right side
    3,092.60x = 8,165,758.21
  5. Step 5: Solve for x
    x = 8,165,758.21/3,092.60
  6. Step 6: Final answer
    x = 2,640.42

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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.