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Finding the Fourth Proportional to 3,289.92, 4,540 and 1,797.76

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Solution

The fourth proportional to 3,289.92, 4,540 and 1,797.76 is: 2,480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.92 : 4,540 = 1,797.76 : x
  2. Step 2: Convert to fraction form
    3,289.92/4,540 = 1,797.76/x
  3. Step 3: Cross multiply
    3,289.92x = 4,540 × 1,797.76
  4. Step 4: Simplify right side
    3,289.92x = 8,161,830.40
  5. Step 5: Solve for x
    x = 8,161,830.40/3,289.92
  6. Step 6: Final answer
    x = 2,480.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.