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Finding the Fourth Proportional to 3,371.88, 5,056 and 1,520.83

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Solution

The fourth proportional to 3,371.88, 5,056 and 1,520.83 is: 2,280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,371.88 : 5,056 = 1,520.83 : x
  2. Step 2: Convert to fraction form
    3,371.88/5,056 = 1,520.83/x
  3. Step 3: Cross multiply
    3,371.88x = 5,056 × 1,520.83
  4. Step 4: Simplify right side
    3,371.88x = 7,689,316.48
  5. Step 5: Solve for x
    x = 7,689,316.48/3,371.88
  6. Step 6: Final answer
    x = 2,280.42

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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.