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Finding the Fourth Proportional to 8,765.79, 13,145.22 and 4,084.89

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Solution

The fourth proportional to 8,765.79, 13,145.22 and 4,084.89 is: 6,125.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.79 : 13,145.22 = 4,084.89 : x
  2. Step 2: Convert to fraction form
    8,765.79/13,145.22 = 4,084.89/x
  3. Step 3: Cross multiply
    8,765.79x = 13,145.22 × 4,084.89
  4. Step 4: Simplify right side
    8,765.79x = 53,696,777.73
  5. Step 5: Solve for x
    x = 53,696,777.73/8,765.79
  6. Step 6: Final answer
    x = 6,125.72

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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.