Home / 3,198.60-4,415.94-2,151.72

Finding the Fourth Proportional to 3,198.60, 4,415.94 and 2,151.72

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Solution

The fourth proportional to 3,198.60, 4,415.94 and 2,151.72 is: 2,970.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.60 : 4,415.94 = 2,151.72 : x
  2. Step 2: Convert to fraction form
    3,198.60/4,415.94 = 2,151.72/x
  3. Step 3: Cross multiply
    3,198.60x = 4,415.94 × 2,151.72
  4. Step 4: Simplify right side
    3,198.60x = 9,501,866.42
  5. Step 5: Solve for x
    x = 9,501,866.42/3,198.60
  6. Step 6: Final answer
    x = 2,970.63

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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.