Home / 7,198.58-9,936.75-4,215.38

Finding the Fourth Proportional to 7,198.58, 9,936.75 and 4,215.38

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Solution

The fourth proportional to 7,198.58, 9,936.75 and 4,215.38 is: 5,818.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,198.58 : 9,936.75 = 4,215.38 : x
  2. Step 2: Convert to fraction form
    7,198.58/9,936.75 = 4,215.38/x
  3. Step 3: Cross multiply
    7,198.58x = 9,936.75 × 4,215.38
  4. Step 4: Simplify right side
    7,198.58x = 41,887,177.22
  5. Step 5: Solve for x
    x = 41,887,177.22/7,198.58
  6. Step 6: Final answer
    x = 5,818.81

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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.