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Finding the Fourth Proportional to 3,078, 4,616.96 and 1,433.63

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Solution

The fourth proportional to 3,078, 4,616.96 and 1,433.63 is: 2,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078 : 4,616.96 = 1,433.63 : x
  2. Step 2: Convert to fraction form
    3,078/4,616.96 = 1,433.63/x
  3. Step 3: Cross multiply
    3,078x = 4,616.96 × 1,433.63
  4. Step 4: Simplify right side
    3,078x = 6,618,982.11
  5. Step 5: Solve for x
    x = 6,618,982.11/3,078
  6. Step 6: Final answer
    x = 2,150.42

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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.