Home / 3,413.78-5,121.90-1,771.10

Finding the Fourth Proportional to 3,413.78, 5,121.90 and 1,771.10

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Solution

The fourth proportional to 3,413.78, 5,121.90 and 1,771.10 is: 2,657.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.78 : 5,121.90 = 1,771.10 : x
  2. Step 2: Convert to fraction form
    3,413.78/5,121.90 = 1,771.10/x
  3. Step 3: Cross multiply
    3,413.78x = 5,121.90 × 1,771.10
  4. Step 4: Simplify right side
    3,413.78x = 9,071,397.09
  5. Step 5: Solve for x
    x = 9,071,397.09/3,413.78
  6. Step 6: Final answer
    x = 2,657.29

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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.