Home / 3,923.14-5,413.91-2,130.62

Finding the Fourth Proportional to 3,923.14, 5,413.91 and 2,130.62

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Solution

The fourth proportional to 3,923.14, 5,413.91 and 2,130.62 is: 2,940.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.14 : 5,413.91 = 2,130.62 : x
  2. Step 2: Convert to fraction form
    3,923.14/5,413.91 = 2,130.62/x
  3. Step 3: Cross multiply
    3,923.14x = 5,413.91 × 2,130.62
  4. Step 4: Simplify right side
    3,923.14x = 11,535,013.22
  5. Step 5: Solve for x
    x = 11,535,013.22/3,923.14
  6. Step 6: Final answer
    x = 2,940.25

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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.