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Finding the Fourth Proportional to 7,289.62, 10,939.74 and 2,908.33

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Solution

The fourth proportional to 7,289.62, 10,939.74 and 2,908.33 is: 4,364.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,289.62 : 10,939.74 = 2,908.33 : x
  2. Step 2: Convert to fraction form
    7,289.62/10,939.74 = 2,908.33/x
  3. Step 3: Cross multiply
    7,289.62x = 10,939.74 × 2,908.33
  4. Step 4: Simplify right side
    7,289.62x = 31,816,319.34
  5. Step 5: Solve for x
    x = 31,816,319.34/7,289.62
  6. Step 6: Final answer
    x = 4,364.61

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1.5x scale

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.