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Finding the Fourth Proportional to 8,469.04, 12,705.72 and 2,625.72

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Solution

The fourth proportional to 8,469.04, 12,705.72 and 2,625.72 is: 3,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.04 : 12,705.72 = 2,625.72 : x
  2. Step 2: Convert to fraction form
    8,469.04/12,705.72 = 2,625.72/x
  3. Step 3: Cross multiply
    8,469.04x = 12,705.72 × 2,625.72
  4. Step 4: Simplify right side
    8,469.04x = 33,361,663.12
  5. Step 5: Solve for x
    x = 33,361,663.12/8,469.04
  6. Step 6: Final answer
    x = 3,939.25

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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.