Home / 5,413.88-8,122.48-2,640.16

Finding the Fourth Proportional to 5,413.88, 8,122.48 and 2,640.16

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Solution

The fourth proportional to 5,413.88, 8,122.48 and 2,640.16 is: 3,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.88 : 8,122.48 = 2,640.16 : x
  2. Step 2: Convert to fraction form
    5,413.88/8,122.48 = 2,640.16/x
  3. Step 3: Cross multiply
    5,413.88x = 8,122.48 × 2,640.16
  4. Step 4: Simplify right side
    5,413.88x = 21,444,646.80
  5. Step 5: Solve for x
    x = 21,444,646.80/5,413.88
  6. Step 6: Final answer
    x = 3,961.05

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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.