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Finding the Fourth Proportional to 6,413.28, 8,855.34 and 4,918.83

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Solution

The fourth proportional to 6,413.28, 8,855.34 and 4,918.83 is: 6,791.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,413.28 : 8,855.34 = 4,918.83 : x
  2. Step 2: Convert to fraction form
    6,413.28/8,855.34 = 4,918.83/x
  3. Step 3: Cross multiply
    6,413.28x = 8,855.34 × 4,918.83
  4. Step 4: Simplify right side
    6,413.28x = 43,557,887.46
  5. Step 5: Solve for x
    x = 43,557,887.46/6,413.28
  6. Step 6: Final answer
    x = 6,791.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.