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Finding the Fourth Proportional to 3,479, 5,218.54 and 881.94

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Solution

The fourth proportional to 3,479, 5,218.54 and 881.94 is: 1,322.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479 : 5,218.54 = 881.94 : x
  2. Step 2: Convert to fraction form
    3,479/5,218.54 = 881.94/x
  3. Step 3: Cross multiply
    3,479x = 5,218.54 × 881.94
  4. Step 4: Simplify right side
    3,479x = 4,602,439.17
  5. Step 5: Solve for x
    x = 4,602,439.17/3,479
  6. Step 6: Final answer
    x = 1,322.92

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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.