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Finding the Fourth Proportional to 2,584.09, 3,874.94 and 828.77

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Solution

The fourth proportional to 2,584.09, 3,874.94 and 828.77 is: 1,242.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,584.09 : 3,874.94 = 828.77 : x
  2. Step 2: Convert to fraction form
    2,584.09/3,874.94 = 828.77/x
  3. Step 3: Cross multiply
    2,584.09x = 3,874.94 × 828.77
  4. Step 4: Simplify right side
    2,584.09x = 3,211,431.25
  5. Step 5: Solve for x
    x = 3,211,431.25/2,584.09
  6. Step 6: Final answer
    x = 1,242.77

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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.