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Finding the Fourth Proportional to 5,949.20, 8,920.20 and 2,661.68

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Solution

The fourth proportional to 5,949.20, 8,920.20 and 2,661.68 is: 3,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,949.20 : 8,920.20 = 2,661.68 : x
  2. Step 2: Convert to fraction form
    5,949.20/8,920.20 = 2,661.68/x
  3. Step 3: Cross multiply
    5,949.20x = 8,920.20 × 2,661.68
  4. Step 4: Simplify right side
    5,949.20x = 23,742,717.94
  5. Step 5: Solve for x
    x = 23,742,717.94/5,949.20
  6. Step 6: Final answer
    x = 3,990.91

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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.