Home / 8,105.58-12,159.29-4,413.20

Finding the Fourth Proportional to 8,105.58, 12,159.29 and 4,413.20

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Solution

The fourth proportional to 8,105.58, 12,159.29 and 4,413.20 is: 6,620.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.58 : 12,159.29 = 4,413.20 : x
  2. Step 2: Convert to fraction form
    8,105.58/12,159.29 = 4,413.20/x
  3. Step 3: Cross multiply
    8,105.58x = 12,159.29 × 4,413.20
  4. Step 4: Simplify right side
    8,105.58x = 53,661,295.77
  5. Step 5: Solve for x
    x = 53,661,295.77/8,105.58
  6. Step 6: Final answer
    x = 6,620.29

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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.