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Finding the Fourth Proportional to 7,993.79, 11,991.35 and 2,150.72

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Solution

The fourth proportional to 7,993.79, 11,991.35 and 2,150.72 is: 3,226.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.79 : 11,991.35 = 2,150.72 : x
  2. Step 2: Convert to fraction form
    7,993.79/11,991.35 = 2,150.72/x
  3. Step 3: Cross multiply
    7,993.79x = 11,991.35 × 2,150.72
  4. Step 4: Simplify right side
    7,993.79x = 25,789,981.69
  5. Step 5: Solve for x
    x = 25,789,981.69/7,993.79
  6. Step 6: Final answer
    x = 3,226.25

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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.