Home / 3,198.40-4,411.09-2,078.47

Finding the Fourth Proportional to 3,198.40, 4,411.09 and 2,078.47

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Solution

The fourth proportional to 3,198.40, 4,411.09 and 2,078.47 is: 2,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.40 : 4,411.09 = 2,078.47 : x
  2. Step 2: Convert to fraction form
    3,198.40/4,411.09 = 2,078.47/x
  3. Step 3: Cross multiply
    3,198.40x = 4,411.09 × 2,078.47
  4. Step 4: Simplify right side
    3,198.40x = 9,168,326.34
  5. Step 5: Solve for x
    x = 9,168,326.34/3,198.40
  6. Step 6: Final answer
    x = 2,866.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.