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Finding the Fourth Proportional to 3,943.03, 5,916.05 and 1,478.95

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Solution

The fourth proportional to 3,943.03, 5,916.05 and 1,478.95 is: 2,218.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.03 : 5,916.05 = 1,478.95 : x
  2. Step 2: Convert to fraction form
    3,943.03/5,916.05 = 1,478.95/x
  3. Step 3: Cross multiply
    3,943.03x = 5,916.05 × 1,478.95
  4. Step 4: Simplify right side
    3,943.03x = 8,749,542.15
  5. Step 5: Solve for x
    x = 8,749,542.15/3,943.03
  6. Step 6: Final answer
    x = 2,218.99

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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.