Home / 7,072.41-9,759.96-3,928.62

Finding the Fourth Proportional to 7,072.41, 9,759.96 and 3,928.62

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Solution

The fourth proportional to 7,072.41, 9,759.96 and 3,928.62 is: 5,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.41 : 9,759.96 = 3,928.62 : x
  2. Step 2: Convert to fraction form
    7,072.41/9,759.96 = 3,928.62/x
  3. Step 3: Cross multiply
    7,072.41x = 9,759.96 × 3,928.62
  4. Step 4: Simplify right side
    7,072.41x = 38,343,174.06
  5. Step 5: Solve for x
    x = 38,343,174.06/7,072.41
  6. Step 6: Final answer
    x = 5,421.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.