Home / 6,939.20-10,413.60-4,992.80

Finding the Fourth Proportional to 6,939.20, 10,413.60 and 4,992.80

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Solution

The fourth proportional to 6,939.20, 10,413.60 and 4,992.80 is: 7,492.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.20 : 10,413.60 = 4,992.80 : x
  2. Step 2: Convert to fraction form
    6,939.20/10,413.60 = 4,992.80/x
  3. Step 3: Cross multiply
    6,939.20x = 10,413.60 × 4,992.80
  4. Step 4: Simplify right side
    6,939.20x = 51,993,022.08
  5. Step 5: Solve for x
    x = 51,993,022.08/6,939.20
  6. Step 6: Final answer
    x = 7,492.65

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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.