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Finding the Fourth Proportional to 8,428.48, 12,644.16 and 2,584.48

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Solution

The fourth proportional to 8,428.48, 12,644.16 and 2,584.48 is: 3,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.48 : 12,644.16 = 2,584.48 : x
  2. Step 2: Convert to fraction form
    8,428.48/12,644.16 = 2,584.48/x
  3. Step 3: Cross multiply
    8,428.48x = 12,644.16 × 2,584.48
  4. Step 4: Simplify right side
    8,428.48x = 32,678,578.64
  5. Step 5: Solve for x
    x = 32,678,578.64/8,428.48
  6. Step 6: Final answer
    x = 3,877.16

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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.