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Finding the Fourth Proportional to 7,212.39, 9,951.41 and 4,379.69

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Solution

The fourth proportional to 7,212.39, 9,951.41 and 4,379.69 is: 6,042.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.39 : 9,951.41 = 4,379.69 : x
  2. Step 2: Convert to fraction form
    7,212.39/9,951.41 = 4,379.69/x
  3. Step 3: Cross multiply
    7,212.39x = 9,951.41 × 4,379.69
  4. Step 4: Simplify right side
    7,212.39x = 43,584,089.37
  5. Step 5: Solve for x
    x = 43,584,089.37/7,212.39
  6. Step 6: Final answer
    x = 6,042.94

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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.