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Finding the Fourth Proportional to 3,858.74, 5,788.07 and 1,086.18

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Solution

The fourth proportional to 3,858.74, 5,788.07 and 1,086.18 is: 1,629.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.74 : 5,788.07 = 1,086.18 : x
  2. Step 2: Convert to fraction form
    3,858.74/5,788.07 = 1,086.18/x
  3. Step 3: Cross multiply
    3,858.74x = 5,788.07 × 1,086.18
  4. Step 4: Simplify right side
    3,858.74x = 6,286,880.44
  5. Step 5: Solve for x
    x = 6,286,880.44/3,858.74
  6. Step 6: Final answer
    x = 1,629.26

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Similar ratio
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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.