Home / 3,315.60-4,976.20-1,369.20

Finding the Fourth Proportional to 3,315.60, 4,976.20 and 1,369.20

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Solution

The fourth proportional to 3,315.60, 4,976.20 and 1,369.20 is: 2,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.60 : 4,976.20 = 1,369.20 : x
  2. Step 2: Convert to fraction form
    3,315.60/4,976.20 = 1,369.20/x
  3. Step 3: Cross multiply
    3,315.60x = 4,976.20 × 1,369.20
  4. Step 4: Simplify right side
    3,315.60x = 6,813,413.04
  5. Step 5: Solve for x
    x = 6,813,413.04/3,315.60
  6. Step 6: Final answer
    x = 2,054.96

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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.