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Finding the Fourth Proportional to 2,584.89, 3,876.21 and 829.26

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Solution

The fourth proportional to 2,584.89, 3,876.21 and 829.26 is: 1,243.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,584.89 : 3,876.21 = 829.26 : x
  2. Step 2: Convert to fraction form
    2,584.89/3,876.21 = 829.26/x
  3. Step 3: Cross multiply
    2,584.89x = 3,876.21 × 829.26
  4. Step 4: Simplify right side
    2,584.89x = 3,214,385.90
  5. Step 5: Solve for x
    x = 3,214,385.90/2,584.89
  6. Step 6: Final answer
    x = 1,243.53

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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.