Home / 6,645.32-9,171.06-3,993.80

Finding the Fourth Proportional to 6,645.32, 9,171.06 and 3,993.80

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Solution

The fourth proportional to 6,645.32, 9,171.06 and 3,993.80 is: 5,511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.32 : 9,171.06 = 3,993.80 : x
  2. Step 2: Convert to fraction form
    6,645.32/9,171.06 = 3,993.80/x
  3. Step 3: Cross multiply
    6,645.32x = 9,171.06 × 3,993.80
  4. Step 4: Simplify right side
    6,645.32x = 36,627,379.43
  5. Step 5: Solve for x
    x = 36,627,379.43/6,645.32
  6. Step 6: Final answer
    x = 5,511.76

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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.