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Finding the Fourth Proportional to 2,571.04, 3,856.96 and 839.26

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Solution

The fourth proportional to 2,571.04, 3,856.96 and 839.26 is: 1,259.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.04 : 3,856.96 = 839.26 : x
  2. Step 2: Convert to fraction form
    2,571.04/3,856.96 = 839.26/x
  3. Step 3: Cross multiply
    2,571.04x = 3,856.96 × 839.26
  4. Step 4: Simplify right side
    2,571.04x = 3,236,992.25
  5. Step 5: Solve for x
    x = 3,236,992.25/2,571.04
  6. Step 6: Final answer
    x = 1,259.02

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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.