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Finding the Fourth Proportional to 8,467.47, 12,693.87 and 4,078.89

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Solution

The fourth proportional to 8,467.47, 12,693.87 and 4,078.89 is: 6,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,467.47 : 12,693.87 = 4,078.89 : x
  2. Step 2: Convert to fraction form
    8,467.47/12,693.87 = 4,078.89/x
  3. Step 3: Cross multiply
    8,467.47x = 12,693.87 × 4,078.89
  4. Step 4: Simplify right side
    8,467.47x = 51,776,899.40
  5. Step 5: Solve for x
    x = 51,776,899.40/8,467.47
  6. Step 6: Final answer
    x = 6,114.80

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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.