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Finding the Fourth Proportional to 9,839.86, 14,763.31 and 3,999.86

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Solution

The fourth proportional to 9,839.86, 14,763.31 and 3,999.86 is: 6,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,839.86 : 14,763.31 = 3,999.86 : x
  2. Step 2: Convert to fraction form
    9,839.86/14,763.31 = 3,999.86/x
  3. Step 3: Cross multiply
    9,839.86x = 14,763.31 × 3,999.86
  4. Step 4: Simplify right side
    9,839.86x = 59,051,173.14
  5. Step 5: Solve for x
    x = 59,051,173.14/9,839.86
  6. Step 6: Final answer
    x = 6,001.22

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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.