Home / 3,042.72-4,198.94-1,645.47

Finding the Fourth Proportional to 3,042.72, 4,198.94 and 1,645.47

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Solution

The fourth proportional to 3,042.72, 4,198.94 and 1,645.47 is: 2,270.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042.72 : 4,198.94 = 1,645.47 : x
  2. Step 2: Convert to fraction form
    3,042.72/4,198.94 = 1,645.47/x
  3. Step 3: Cross multiply
    3,042.72x = 4,198.94 × 1,645.47
  4. Step 4: Simplify right side
    3,042.72x = 6,909,229.80
  5. Step 5: Solve for x
    x = 6,909,229.80/3,042.72
  6. Step 6: Final answer
    x = 2,270.74

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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.