Home / 3,745.08-5,618.78-1,279.89

Finding the Fourth Proportional to 3,745.08, 5,618.78 and 1,279.89

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Solution

The fourth proportional to 3,745.08, 5,618.78 and 1,279.89 is: 1,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.08 : 5,618.78 = 1,279.89 : x
  2. Step 2: Convert to fraction form
    3,745.08/5,618.78 = 1,279.89/x
  3. Step 3: Cross multiply
    3,745.08x = 5,618.78 × 1,279.89
  4. Step 4: Simplify right side
    3,745.08x = 7,191,413.93
  5. Step 5: Solve for x
    x = 7,191,413.93/3,745.08
  6. Step 6: Final answer
    x = 1,920.23

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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.