Home / 3,198.48-4,798.87-1,118.79

Finding the Fourth Proportional to 3,198.48, 4,798.87 and 1,118.79

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Solution

The fourth proportional to 3,198.48, 4,798.87 and 1,118.79 is: 1,678.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.48 : 4,798.87 = 1,118.79 : x
  2. Step 2: Convert to fraction form
    3,198.48/4,798.87 = 1,118.79/x
  3. Step 3: Cross multiply
    3,198.48x = 4,798.87 × 1,118.79
  4. Step 4: Simplify right side
    3,198.48x = 5,368,927.77
  5. Step 5: Solve for x
    x = 5,368,927.77/3,198.48
  6. Step 6: Final answer
    x = 1,678.59

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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.