Home / 3,390.51-5,085.78-1,198.05

Finding the Fourth Proportional to 3,390.51, 5,085.78 and 1,198.05

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Solution

The fourth proportional to 3,390.51, 5,085.78 and 1,198.05 is: 1,797.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.51 : 5,085.78 = 1,198.05 : x
  2. Step 2: Convert to fraction form
    3,390.51/5,085.78 = 1,198.05/x
  3. Step 3: Cross multiply
    3,390.51x = 5,085.78 × 1,198.05
  4. Step 4: Simplify right side
    3,390.51x = 6,093,018.73
  5. Step 5: Solve for x
    x = 6,093,018.73/3,390.51
  6. Step 6: Final answer
    x = 1,797.08

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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.