Home / 5,413.90-8,121.14-1,716.42

Finding the Fourth Proportional to 5,413.90, 8,121.14 and 1,716.42

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Solution

The fourth proportional to 5,413.90, 8,121.14 and 1,716.42 is: 2,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.90 : 8,121.14 = 1,716.42 : x
  2. Step 2: Convert to fraction form
    5,413.90/8,121.14 = 1,716.42/x
  3. Step 3: Cross multiply
    5,413.90x = 8,121.14 × 1,716.42
  4. Step 4: Simplify right side
    5,413.90x = 13,939,237.93
  5. Step 5: Solve for x
    x = 13,939,237.93/5,413.90
  6. Step 6: Final answer
    x = 2,574.71

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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.