Home / 6,619.78-9,135.44-3,635.83

Finding the Fourth Proportional to 6,619.78, 9,135.44 and 3,635.83

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Solution

The fourth proportional to 6,619.78, 9,135.44 and 3,635.83 is: 5,017.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.78 : 9,135.44 = 3,635.83 : x
  2. Step 2: Convert to fraction form
    6,619.78/9,135.44 = 3,635.83/x
  3. Step 3: Cross multiply
    6,619.78x = 9,135.44 × 3,635.83
  4. Step 4: Simplify right side
    6,619.78x = 33,214,906.82
  5. Step 5: Solve for x
    x = 33,214,906.82/6,619.78
  6. Step 6: Final answer
    x = 5,017.52

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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.