Home / 1,611.25-2,413.22-1,319.65

Finding the Fourth Proportional to 1,611.25, 2,413.22 and 1,319.65

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Solution

The fourth proportional to 1,611.25, 2,413.22 and 1,319.65 is: 1,976.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.25 : 2,413.22 = 1,319.65 : x
  2. Step 2: Convert to fraction form
    1,611.25/2,413.22 = 1,319.65/x
  3. Step 3: Cross multiply
    1,611.25x = 2,413.22 × 1,319.65
  4. Step 4: Simplify right side
    1,611.25x = 3,184,593.14
  5. Step 5: Solve for x
    x = 3,184,593.14/1,611.25
  6. Step 6: Final answer
    x = 1,976.48

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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.