Home / 3,922.62-5,413.22-2,130.10

Finding the Fourth Proportional to 3,922.62, 5,413.22 and 2,130.10

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Solution

The fourth proportional to 3,922.62, 5,413.22 and 2,130.10 is: 2,939.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.62 : 5,413.22 = 2,130.10 : x
  2. Step 2: Convert to fraction form
    3,922.62/5,413.22 = 2,130.10/x
  3. Step 3: Cross multiply
    3,922.62x = 5,413.22 × 2,130.10
  4. Step 4: Simplify right side
    3,922.62x = 11,530,662.21
  5. Step 5: Solve for x
    x = 11,530,662.21/3,922.62
  6. Step 6: Final answer
    x = 2,939.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.