Home / 4,278.56-6,413.88-1,815.44

Finding the Fourth Proportional to 4,278.56, 6,413.88 and 1,815.44

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Solution

The fourth proportional to 4,278.56, 6,413.88 and 1,815.44 is: 2,721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.56 : 6,413.88 = 1,815.44 : x
  2. Step 2: Convert to fraction form
    4,278.56/6,413.88 = 1,815.44/x
  3. Step 3: Cross multiply
    4,278.56x = 6,413.88 × 1,815.44
  4. Step 4: Simplify right side
    4,278.56x = 11,644,014.31
  5. Step 5: Solve for x
    x = 11,644,014.31/4,278.56
  6. Step 6: Final answer
    x = 2,721.48

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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.