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Finding the Fourth Proportional to 8,674.85, 12,999.30 and 4,773.89

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Solution

The fourth proportional to 8,674.85, 12,999.30 and 4,773.89 is: 7,153.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.85 : 12,999.30 = 4,773.89 : x
  2. Step 2: Convert to fraction form
    8,674.85/12,999.30 = 4,773.89/x
  3. Step 3: Cross multiply
    8,674.85x = 12,999.30 × 4,773.89
  4. Step 4: Simplify right side
    8,674.85x = 62,057,163.28
  5. Step 5: Solve for x
    x = 62,057,163.28/8,674.85
  6. Step 6: Final answer
    x = 7,153.69

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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.