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Finding the Fourth Proportional to 7,339.41, 10,128.23 and 3,982.23

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Solution

The fourth proportional to 7,339.41, 10,128.23 and 3,982.23 is: 5,495.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,339.41 : 10,128.23 = 3,982.23 : x
  2. Step 2: Convert to fraction form
    7,339.41/10,128.23 = 3,982.23/x
  3. Step 3: Cross multiply
    7,339.41x = 10,128.23 × 3,982.23
  4. Step 4: Simplify right side
    7,339.41x = 40,332,921.44
  5. Step 5: Solve for x
    x = 40,332,921.44/7,339.41
  6. Step 6: Final answer
    x = 5,495.39

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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.