Home / 6,821.55-9,413.21-3,836.79

Finding the Fourth Proportional to 6,821.55, 9,413.21 and 3,836.79

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Solution

The fourth proportional to 6,821.55, 9,413.21 and 3,836.79 is: 5,294.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.55 : 9,413.21 = 3,836.79 : x
  2. Step 2: Convert to fraction form
    6,821.55/9,413.21 = 3,836.79/x
  3. Step 3: Cross multiply
    6,821.55x = 9,413.21 × 3,836.79
  4. Step 4: Simplify right side
    6,821.55x = 36,116,519.59
  5. Step 5: Solve for x
    x = 36,116,519.59/6,821.55
  6. Step 6: Final answer
    x = 5,294.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.