Home / 3,413.52-5,120.40-1,333.68

Finding the Fourth Proportional to 3,413.52, 5,120.40 and 1,333.68

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Solution

The fourth proportional to 3,413.52, 5,120.40 and 1,333.68 is: 2,000.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.52 : 5,120.40 = 1,333.68 : x
  2. Step 2: Convert to fraction form
    3,413.52/5,120.40 = 1,333.68/x
  3. Step 3: Cross multiply
    3,413.52x = 5,120.40 × 1,333.68
  4. Step 4: Simplify right side
    3,413.52x = 6,828,975.07
  5. Step 5: Solve for x
    x = 6,828,975.07/3,413.52
  6. Step 6: Final answer
    x = 2,000.57

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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.