Home / 2,413.92-3,620.90-1,319.20

Finding the Fourth Proportional to 2,413.92, 3,620.90 and 1,319.20

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Solution

The fourth proportional to 2,413.92, 3,620.90 and 1,319.20 is: 1,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,413.92 : 3,620.90 = 1,319.20 : x
  2. Step 2: Convert to fraction form
    2,413.92/3,620.90 = 1,319.20/x
  3. Step 3: Cross multiply
    2,413.92x = 3,620.90 × 1,319.20
  4. Step 4: Simplify right side
    2,413.92x = 4,776,691.28
  5. Step 5: Solve for x
    x = 4,776,691.28/2,413.92
  6. Step 6: Final answer
    x = 1,978.81

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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.