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Finding the Fourth Proportional to 7,190.92, 10,771.79 and 3,720.88

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Solution

The fourth proportional to 7,190.92, 10,771.79 and 3,720.88 is: 5,573.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.92 : 10,771.79 = 3,720.88 : x
  2. Step 2: Convert to fraction form
    7,190.92/10,771.79 = 3,720.88/x
  3. Step 3: Cross multiply
    7,190.92x = 10,771.79 × 3,720.88
  4. Step 4: Simplify right side
    7,190.92x = 40,080,484.12
  5. Step 5: Solve for x
    x = 40,080,484.12/7,190.92
  6. Step 6: Final answer
    x = 5,573.77

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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.