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Finding the Fourth Proportional to 8,412, 12,619.62 and 3,795

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Solution

The fourth proportional to 8,412, 12,619.62 and 3,795 is: 5,693.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412 : 12,619.62 = 3,795 : x
  2. Step 2: Convert to fraction form
    8,412/12,619.62 = 3,795/x
  3. Step 3: Cross multiply
    8,412x = 12,619.62 × 3,795
  4. Step 4: Simplify right side
    8,412x = 47,891,457.90
  5. Step 5: Solve for x
    x = 47,891,457.90/8,412
  6. Step 6: Final answer
    x = 5,693.23

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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.