Home / 3,413.09-5,120.40-1,333.10

Finding the Fourth Proportional to 3,413.09, 5,120.40 and 1,333.10

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Solution

The fourth proportional to 3,413.09, 5,120.40 and 1,333.10 is: 1,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.09 : 5,120.40 = 1,333.10 : x
  2. Step 2: Convert to fraction form
    3,413.09/5,120.40 = 1,333.10/x
  3. Step 3: Cross multiply
    3,413.09x = 5,120.40 × 1,333.10
  4. Step 4: Simplify right side
    3,413.09x = 6,826,005.24
  5. Step 5: Solve for x
    x = 6,826,005.24/3,413.09
  6. Step 6: Final answer
    x = 1,999.95

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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.