Home / 5,413.92-8,120.32-3,215.68

Finding the Fourth Proportional to 5,413.92, 8,120.32 and 3,215.68

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Solution

The fourth proportional to 5,413.92, 8,120.32 and 3,215.68 is: 4,823.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.92 : 8,120.32 = 3,215.68 : x
  2. Step 2: Convert to fraction form
    5,413.92/8,120.32 = 3,215.68/x
  3. Step 3: Cross multiply
    5,413.92x = 8,120.32 × 3,215.68
  4. Step 4: Simplify right side
    5,413.92x = 26,112,350.62
  5. Step 5: Solve for x
    x = 26,112,350.62/5,413.92
  6. Step 6: Final answer
    x = 4,823.19

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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.