Home / 7,839.45-11,762.96-3,890.97

Finding the Fourth Proportional to 7,839.45, 11,762.96 and 3,890.97

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Solution

The fourth proportional to 7,839.45, 11,762.96 and 3,890.97 is: 5,838.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.45 : 11,762.96 = 3,890.97 : x
  2. Step 2: Convert to fraction form
    7,839.45/11,762.96 = 3,890.97/x
  3. Step 3: Cross multiply
    7,839.45x = 11,762.96 × 3,890.97
  4. Step 4: Simplify right side
    7,839.45x = 45,769,305.02
  5. Step 5: Solve for x
    x = 45,769,305.02/7,839.45
  6. Step 6: Final answer
    x = 5,838.33

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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.