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Finding the Fourth Proportional to 3,880.88, 5,817.75 and 1,413.92

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Solution

The fourth proportional to 3,880.88, 5,817.75 and 1,413.92 is: 2,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.88 : 5,817.75 = 1,413.92 : x
  2. Step 2: Convert to fraction form
    3,880.88/5,817.75 = 1,413.92/x
  3. Step 3: Cross multiply
    3,880.88x = 5,817.75 × 1,413.92
  4. Step 4: Simplify right side
    3,880.88x = 8,225,803.99
  5. Step 5: Solve for x
    x = 8,225,803.99/3,880.88
  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.