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Finding the Fourth Proportional to 8,783.44, 12,121.50 and 4,804.72

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Solution

The fourth proportional to 8,783.44, 12,121.50 and 4,804.72 is: 6,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.44 : 12,121.50 = 4,804.72 : x
  2. Step 2: Convert to fraction form
    8,783.44/12,121.50 = 4,804.72/x
  3. Step 3: Cross multiply
    8,783.44x = 12,121.50 × 4,804.72
  4. Step 4: Simplify right side
    8,783.44x = 58,240,413.48
  5. Step 5: Solve for x
    x = 58,240,413.48/8,783.44
  6. Step 6: Final answer
    x = 6,630.71

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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.