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Finding the Fourth Proportional to 3,391.64, 5,081.09 and 2,659.00

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Solution

The fourth proportional to 3,391.64, 5,081.09 and 2,659.00 is: 3,983.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.64 : 5,081.09 = 2,659.00 : x
  2. Step 2: Convert to fraction form
    3,391.64/5,081.09 = 2,659.00/x
  3. Step 3: Cross multiply
    3,391.64x = 5,081.09 × 2,659.00
  4. Step 4: Simplify right side
    3,391.64x = 13,510,592.31
  5. Step 5: Solve for x
    x = 13,510,592.31/3,391.64
  6. Step 6: Final answer
    x = 3,983.50

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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.