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Finding the Fourth Proportional to 1,876.93, 2,813.85 and 1,413.82

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Solution

The fourth proportional to 1,876.93, 2,813.85 and 1,413.82 is: 2,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.93 : 2,813.85 = 1,413.82 : x
  2. Step 2: Convert to fraction form
    1,876.93/2,813.85 = 1,413.82/x
  3. Step 3: Cross multiply
    1,876.93x = 2,813.85 × 1,413.82
  4. Step 4: Simplify right side
    1,876.93x = 3,978,277.41
  5. Step 5: Solve for x
    x = 3,978,277.41/1,876.93
  6. Step 6: Final answer
    x = 2,119.57

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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.