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Finding the Fourth Proportional to 8,783.73, 13,170.74 and 2,938.77

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Solution

The fourth proportional to 8,783.73, 13,170.74 and 2,938.77 is: 4,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.73 : 13,170.74 = 2,938.77 : x
  2. Step 2: Convert to fraction form
    8,783.73/13,170.74 = 2,938.77/x
  3. Step 3: Cross multiply
    8,783.73x = 13,170.74 × 2,938.77
  4. Step 4: Simplify right side
    8,783.73x = 38,705,760.90
  5. Step 5: Solve for x
    x = 38,705,760.90/8,783.73
  6. Step 6: Final answer
    x = 4,406.53

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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.