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Finding the Fourth Proportional to 3,889.26, 5,829.75 and 2,653.61

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Solution

The fourth proportional to 3,889.26, 5,829.75 and 2,653.61 is: 3,977.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.26 : 5,829.75 = 2,653.61 : x
  2. Step 2: Convert to fraction form
    3,889.26/5,829.75 = 2,653.61/x
  3. Step 3: Cross multiply
    3,889.26x = 5,829.75 × 2,653.61
  4. Step 4: Simplify right side
    3,889.26x = 15,469,853.75
  5. Step 5: Solve for x
    x = 15,469,853.75/3,889.26
  6. Step 6: Final answer
    x = 3,977.58

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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.