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Finding the Fourth Proportional to 6,413.56, 8,854.72 and 4,918.60

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Solution

The fourth proportional to 6,413.56, 8,854.72 and 4,918.60 is: 6,790.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,413.56 : 8,854.72 = 4,918.60 : x
  2. Step 2: Convert to fraction form
    6,413.56/8,854.72 = 4,918.60/x
  3. Step 3: Cross multiply
    6,413.56x = 8,854.72 × 4,918.60
  4. Step 4: Simplify right side
    6,413.56x = 43,552,825.79
  5. Step 5: Solve for x
    x = 43,552,825.79/6,413.56
  6. Step 6: Final answer
    x = 6,790.74

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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.