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Finding the Fourth Proportional to 3,794.03, 5,682.74 and 3,128.43

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Solution

The fourth proportional to 3,794.03, 5,682.74 and 3,128.43 is: 4,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,794.03 : 5,682.74 = 3,128.43 : x
  2. Step 2: Convert to fraction form
    3,794.03/5,682.74 = 3,128.43/x
  3. Step 3: Cross multiply
    3,794.03x = 5,682.74 × 3,128.43
  4. Step 4: Simplify right side
    3,794.03x = 17,778,054.30
  5. Step 5: Solve for x
    x = 17,778,054.30/3,794.03
  6. Step 6: Final answer
    x = 4,685.80

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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.