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Finding the Fourth Proportional to 2,798.72, 4,198.86 and 1,133.36

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Solution

The fourth proportional to 2,798.72, 4,198.86 and 1,133.36 is: 1,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.72 : 4,198.86 = 1,133.36 : x
  2. Step 2: Convert to fraction form
    2,798.72/4,198.86 = 1,133.36/x
  3. Step 3: Cross multiply
    2,798.72x = 4,198.86 × 1,133.36
  4. Step 4: Simplify right side
    2,798.72x = 4,758,819.97
  5. Step 5: Solve for x
    x = 4,758,819.97/2,798.72
  6. Step 6: Final answer
    x = 1,700.36

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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.