Home / 8,276.88-12,415.44-3,081.68

Finding the Fourth Proportional to 8,276.88, 12,415.44 and 3,081.68

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Solution

The fourth proportional to 8,276.88, 12,415.44 and 3,081.68 is: 4,622.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,276.88 : 12,415.44 = 3,081.68 : x
  2. Step 2: Convert to fraction form
    8,276.88/12,415.44 = 3,081.68/x
  3. Step 3: Cross multiply
    8,276.88x = 12,415.44 × 3,081.68
  4. Step 4: Simplify right side
    8,276.88x = 38,260,413.14
  5. Step 5: Solve for x
    x = 38,260,413.14/8,276.88
  6. Step 6: Final answer
    x = 4,622.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.