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Finding the Fourth Proportional to 9,137, 13,697.28 and 3,289.50

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Solution

The fourth proportional to 9,137, 13,697.28 and 3,289.50 is: 4,931.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137 : 13,697.28 = 3,289.50 : x
  2. Step 2: Convert to fraction form
    9,137/13,697.28 = 3,289.50/x
  3. Step 3: Cross multiply
    9,137x = 13,697.28 × 3,289.50
  4. Step 4: Simplify right side
    9,137x = 45,057,202.56
  5. Step 5: Solve for x
    x = 45,057,202.56/9,137
  6. Step 6: Final answer
    x = 4,931.29

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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.