Home / 6,619.74-9,135.09-3,930.54

Finding the Fourth Proportional to 6,619.74, 9,135.09 and 3,930.54

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Solution

The fourth proportional to 6,619.74, 9,135.09 and 3,930.54 is: 5,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.74 : 9,135.09 = 3,930.54 : x
  2. Step 2: Convert to fraction form
    6,619.74/9,135.09 = 3,930.54/x
  3. Step 3: Cross multiply
    6,619.74x = 9,135.09 × 3,930.54
  4. Step 4: Simplify right side
    6,619.74x = 35,905,836.65
  5. Step 5: Solve for x
    x = 35,905,836.65/6,619.74
  6. Step 6: Final answer
    x = 5,424.06

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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.