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Finding the Fourth Proportional to 7,190.62, 9,922.83 and 4,003.92

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Solution

The fourth proportional to 7,190.62, 9,922.83 and 4,003.92 is: 5,525.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.62 : 9,922.83 = 4,003.92 : x
  2. Step 2: Convert to fraction form
    7,190.62/9,922.83 = 4,003.92/x
  3. Step 3: Cross multiply
    7,190.62x = 9,922.83 × 4,003.92
  4. Step 4: Simplify right side
    7,190.62x = 39,730,199.79
  5. Step 5: Solve for x
    x = 39,730,199.79/7,190.62
  6. Step 6: Final answer
    x = 5,525.28

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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.