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Finding the Fourth Proportional to 3,299.88, 4,949.88 and 1,220.07

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Solution

The fourth proportional to 3,299.88, 4,949.88 and 1,220.07 is: 1,830.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,299.88 : 4,949.88 = 1,220.07 : x
  2. Step 2: Convert to fraction form
    3,299.88/4,949.88 = 1,220.07/x
  3. Step 3: Cross multiply
    3,299.88x = 4,949.88 × 1,220.07
  4. Step 4: Simplify right side
    3,299.88x = 6,039,200.09
  5. Step 5: Solve for x
    x = 6,039,200.09/3,299.88
  6. Step 6: Final answer
    x = 1,830.13

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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.