Home / 3,413.74-5,120.60-2,178.08

Finding the Fourth Proportional to 3,413.74, 5,120.60 and 2,178.08

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Solution

The fourth proportional to 3,413.74, 5,120.60 and 2,178.08 is: 3,267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.74 : 5,120.60 = 2,178.08 : x
  2. Step 2: Convert to fraction form
    3,413.74/5,120.60 = 2,178.08/x
  3. Step 3: Cross multiply
    3,413.74x = 5,120.60 × 2,178.08
  4. Step 4: Simplify right side
    3,413.74x = 11,153,076.45
  5. Step 5: Solve for x
    x = 11,153,076.45/3,413.74
  6. Step 6: Final answer
    x = 3,267.11

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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.