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Finding the Fourth Proportional to 11,461, 17,191.50 and 3,253

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Solution

The fourth proportional to 11,461, 17,191.50 and 3,253 is: 4,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,461 : 17,191.50 = 3,253 : x
  2. Step 2: Convert to fraction form
    11,461/17,191.50 = 3,253/x
  3. Step 3: Cross multiply
    11,461x = 17,191.50 × 3,253
  4. Step 4: Simplify right side
    11,461x = 55,923,949.50
  5. Step 5: Solve for x
    x = 55,923,949.50/11,461
  6. Step 6: Final answer
    x = 4,879.50

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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.