Home / 6,819.12-9,413.76-5,137.92

Finding the Fourth Proportional to 6,819.12, 9,413.76 and 5,137.92

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Solution

The fourth proportional to 6,819.12, 9,413.76 and 5,137.92 is: 7,092.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819.12 : 9,413.76 = 5,137.92 : x
  2. Step 2: Convert to fraction form
    6,819.12/9,413.76 = 5,137.92/x
  3. Step 3: Cross multiply
    6,819.12x = 9,413.76 × 5,137.92
  4. Step 4: Simplify right side
    6,819.12x = 48,367,145.78
  5. Step 5: Solve for x
    x = 48,367,145.78/6,819.12
  6. Step 6: Final answer
    x = 7,092.87

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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.