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Finding the Fourth Proportional to 7,378.83, 10,183.08 and 4,021.83

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Solution

The fourth proportional to 7,378.83, 10,183.08 and 4,021.83 is: 5,550.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378.83 : 10,183.08 = 4,021.83 : x
  2. Step 2: Convert to fraction form
    7,378.83/10,183.08 = 4,021.83/x
  3. Step 3: Cross multiply
    7,378.83x = 10,183.08 × 4,021.83
  4. Step 4: Simplify right side
    7,378.83x = 40,954,616.64
  5. Step 5: Solve for x
    x = 40,954,616.64/7,378.83
  6. Step 6: Final answer
    x = 5,550.29

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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.