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Finding the Fourth Proportional to 3,390.99, 5,072.43 and 3,183.63

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Solution

The fourth proportional to 3,390.99, 5,072.43 and 3,183.63 is: 4,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.99 : 5,072.43 = 3,183.63 : x
  2. Step 2: Convert to fraction form
    3,390.99/5,072.43 = 3,183.63/x
  3. Step 3: Cross multiply
    3,390.99x = 5,072.43 × 3,183.63
  4. Step 4: Simplify right side
    3,390.99x = 16,148,740.32
  5. Step 5: Solve for x
    x = 16,148,740.32/3,390.99
  6. Step 6: Final answer
    x = 4,762.25

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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.