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Finding the Fourth Proportional to 3,960.55, 5,941.91 and 1,328.49

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Solution

The fourth proportional to 3,960.55, 5,941.91 and 1,328.49 is: 1,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.55 : 5,941.91 = 1,328.49 : x
  2. Step 2: Convert to fraction form
    3,960.55/5,941.91 = 1,328.49/x
  3. Step 3: Cross multiply
    3,960.55x = 5,941.91 × 1,328.49
  4. Step 4: Simplify right side
    3,960.55x = 7,893,768.02
  5. Step 5: Solve for x
    x = 7,893,768.02/3,960.55
  6. Step 6: Final answer
    x = 1,993.10

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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.