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Finding the Fourth Proportional to 2,639.08, 3,958.80 and 884.01

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Solution

The fourth proportional to 2,639.08, 3,958.80 and 884.01 is: 1,326.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.08 : 3,958.80 = 884.01 : x
  2. Step 2: Convert to fraction form
    2,639.08/3,958.80 = 884.01/x
  3. Step 3: Cross multiply
    2,639.08x = 3,958.80 × 884.01
  4. Step 4: Simplify right side
    2,639.08x = 3,499,626.47
  5. Step 5: Solve for x
    x = 3,499,626.47/2,639.08
  6. Step 6: Final answer
    x = 1,326.08

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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.