Home / 3,413.15-5,119.76-1,438.80

Finding the Fourth Proportional to 3,413.15, 5,119.76 and 1,438.80

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Solution

The fourth proportional to 3,413.15, 5,119.76 and 1,438.80 is: 2,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.15 : 5,119.76 = 1,438.80 : x
  2. Step 2: Convert to fraction form
    3,413.15/5,119.76 = 1,438.80/x
  3. Step 3: Cross multiply
    3,413.15x = 5,119.76 × 1,438.80
  4. Step 4: Simplify right side
    3,413.15x = 7,366,303.49
  5. Step 5: Solve for x
    x = 7,366,303.49/3,413.15
  6. Step 6: Final answer
    x = 2,158.22

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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.