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Finding the Fourth Proportional to 7,072.26, 9,760.02 and 3,928.44

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Solution

The fourth proportional to 7,072.26, 9,760.02 and 3,928.44 is: 5,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.26 : 9,760.02 = 3,928.44 : x
  2. Step 2: Convert to fraction form
    7,072.26/9,760.02 = 3,928.44/x
  3. Step 3: Cross multiply
    7,072.26x = 9,760.02 × 3,928.44
  4. Step 4: Simplify right side
    7,072.26x = 38,341,652.97
  5. Step 5: Solve for x
    x = 38,341,652.97/7,072.26
  6. Step 6: Final answer
    x = 5,421.41

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1.5x scale

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.