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Finding the Fourth Proportional to 8,299.64, 12,454.01 and 3,916.98

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Solution

The fourth proportional to 8,299.64, 12,454.01 and 3,916.98 is: 5,877.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,299.64 : 12,454.01 = 3,916.98 : x
  2. Step 2: Convert to fraction form
    8,299.64/12,454.01 = 3,916.98/x
  3. Step 3: Cross multiply
    8,299.64x = 12,454.01 × 3,916.98
  4. Step 4: Simplify right side
    8,299.64x = 48,782,108.09
  5. Step 5: Solve for x
    x = 48,782,108.09/8,299.64
  6. Step 6: Final answer
    x = 5,877.62

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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.