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Finding the Fourth Proportional to 6,600.60, 9,901.80 and 2,218.50

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Solution

The fourth proportional to 6,600.60, 9,901.80 and 2,218.50 is: 3,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.60 : 9,901.80 = 2,218.50 : x
  2. Step 2: Convert to fraction form
    6,600.60/9,901.80 = 2,218.50/x
  3. Step 3: Cross multiply
    6,600.60x = 9,901.80 × 2,218.50
  4. Step 4: Simplify right side
    6,600.60x = 21,967,143.30
  5. Step 5: Solve for x
    x = 21,967,143.30/6,600.60
  6. Step 6: Final answer
    x = 3,328.05

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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.