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Finding the Fourth Proportional to 8,379.50, 11,563.74 and 4,653.50

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Solution

The fourth proportional to 8,379.50, 11,563.74 and 4,653.50 is: 6,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.50 : 11,563.74 = 4,653.50 : x
  2. Step 2: Convert to fraction form
    8,379.50/11,563.74 = 4,653.50/x
  3. Step 3: Cross multiply
    8,379.50x = 11,563.74 × 4,653.50
  4. Step 4: Simplify right side
    8,379.50x = 53,811,864.09
  5. Step 5: Solve for x
    x = 53,811,864.09/8,379.50
  6. Step 6: Final answer
    x = 6,421.85

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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.