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Finding the Fourth Proportional to 8,614.98, 12,916.39 and 3,345.60

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Solution

The fourth proportional to 8,614.98, 12,916.39 and 3,345.60 is: 5,016.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,614.98 : 12,916.39 = 3,345.60 : x
  2. Step 2: Convert to fraction form
    8,614.98/12,916.39 = 3,345.60/x
  3. Step 3: Cross multiply
    8,614.98x = 12,916.39 × 3,345.60
  4. Step 4: Simplify right side
    8,614.98x = 43,213,121.02
  5. Step 5: Solve for x
    x = 43,213,121.02/8,614.98
  6. Step 6: Final answer
    x = 5,016.04

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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.