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Finding the Fourth Proportional to 11,737.55, 17,604.48 and 3,840

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Solution

The fourth proportional to 11,737.55, 17,604.48 and 3,840 is: 5,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,737.55 : 17,604.48 = 3,840 : x
  2. Step 2: Convert to fraction form
    11,737.55/17,604.48 = 3,840/x
  3. Step 3: Cross multiply
    11,737.55x = 17,604.48 × 3,840
  4. Step 4: Simplify right side
    11,737.55x = 67,601,203.20
  5. Step 5: Solve for x
    x = 67,601,203.20/11,737.55
  6. Step 6: Final answer
    x = 5,759.40

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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.