Home / 7,825.89-11,732.67-3,878.50

Finding the Fourth Proportional to 7,825.89, 11,732.67 and 3,878.50

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Solution

The fourth proportional to 7,825.89, 11,732.67 and 3,878.50 is: 5,814.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,825.89 : 11,732.67 = 3,878.50 : x
  2. Step 2: Convert to fraction form
    7,825.89/11,732.67 = 3,878.50/x
  3. Step 3: Cross multiply
    7,825.89x = 11,732.67 × 3,878.50
  4. Step 4: Simplify right side
    7,825.89x = 45,505,160.60
  5. Step 5: Solve for x
    x = 45,505,160.60/7,825.89
  6. Step 6: Final answer
    x = 5,814.69

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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.