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Finding the Fourth Proportional to 2,798.86, 4,198.70 and 1,043.72

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Solution

The fourth proportional to 2,798.86, 4,198.70 and 1,043.72 is: 1,565.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.86 : 4,198.70 = 1,043.72 : x
  2. Step 2: Convert to fraction form
    2,798.86/4,198.70 = 1,043.72/x
  3. Step 3: Cross multiply
    2,798.86x = 4,198.70 × 1,043.72
  4. Step 4: Simplify right side
    2,798.86x = 4,382,267.16
  5. Step 5: Solve for x
    x = 4,382,267.16/2,798.86
  6. Step 6: Final answer
    x = 1,565.73

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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.