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Finding the Fourth Proportional to 2,413.72, 3,620.48 and 770.36

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Solution

The fourth proportional to 2,413.72, 3,620.48 and 770.36 is: 1,155.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,413.72 : 3,620.48 = 770.36 : x
  2. Step 2: Convert to fraction form
    2,413.72/3,620.48 = 770.36/x
  3. Step 3: Cross multiply
    2,413.72x = 3,620.48 × 770.36
  4. Step 4: Simplify right side
    2,413.72x = 2,789,072.97
  5. Step 5: Solve for x
    x = 2,789,072.97/2,413.72
  6. Step 6: Final answer
    x = 1,155.51

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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.