Home / 3,413.36-5,119.80-1,221.68

Finding the Fourth Proportional to 3,413.36, 5,119.80 and 1,221.68

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Solution

The fourth proportional to 3,413.36, 5,119.80 and 1,221.68 is: 1,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.36 : 5,119.80 = 1,221.68 : x
  2. Step 2: Convert to fraction form
    3,413.36/5,119.80 = 1,221.68/x
  3. Step 3: Cross multiply
    3,413.36x = 5,119.80 × 1,221.68
  4. Step 4: Simplify right side
    3,413.36x = 6,254,757.26
  5. Step 5: Solve for x
    x = 6,254,757.26/3,413.36
  6. Step 6: Final answer
    x = 1,832.43

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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.