Home / 3,413.44-5,115.72-2,972.80

Finding the Fourth Proportional to 3,413.44, 5,115.72 and 2,972.80

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Solution

The fourth proportional to 3,413.44, 5,115.72 and 2,972.80 is: 4,455.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.44 : 5,115.72 = 2,972.80 : x
  2. Step 2: Convert to fraction form
    3,413.44/5,115.72 = 2,972.80/x
  3. Step 3: Cross multiply
    3,413.44x = 5,115.72 × 2,972.80
  4. Step 4: Simplify right side
    3,413.44x = 15,208,012.42
  5. Step 5: Solve for x
    x = 15,208,012.42/3,413.44
  6. Step 6: Final answer
    x = 4,455.33

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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.