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Finding the Fourth Proportional to 2,789.92, 4,180.46 and 2,267.40

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Solution

The fourth proportional to 2,789.92, 4,180.46 and 2,267.40 is: 3,397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.92 : 4,180.46 = 2,267.40 : x
  2. Step 2: Convert to fraction form
    2,789.92/4,180.46 = 2,267.40/x
  3. Step 3: Cross multiply
    2,789.92x = 4,180.46 × 2,267.40
  4. Step 4: Simplify right side
    2,789.92x = 9,478,775.00
  5. Step 5: Solve for x
    x = 9,478,775.00/2,789.92
  6. Step 6: Final answer
    x = 3,397.51

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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.