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Finding the Fourth Proportional to 3,991.26, 5,978.73 and 3,253.50

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Solution

The fourth proportional to 3,991.26, 5,978.73 and 3,253.50 is: 4,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.26 : 5,978.73 = 3,253.50 : x
  2. Step 2: Convert to fraction form
    3,991.26/5,978.73 = 3,253.50/x
  3. Step 3: Cross multiply
    3,991.26x = 5,978.73 × 3,253.50
  4. Step 4: Simplify right side
    3,991.26x = 19,451,798.06
  5. Step 5: Solve for x
    x = 19,451,798.06/3,991.26
  6. Step 6: Final answer
    x = 4,873.60

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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.