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Finding the Fourth Proportional to 3,871.01, 5,806.83 and 1,238.87

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Solution

The fourth proportional to 3,871.01, 5,806.83 and 1,238.87 is: 1,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.01 : 5,806.83 = 1,238.87 : x
  2. Step 2: Convert to fraction form
    3,871.01/5,806.83 = 1,238.87/x
  3. Step 3: Cross multiply
    3,871.01x = 5,806.83 × 1,238.87
  4. Step 4: Simplify right side
    3,871.01x = 7,193,878.45
  5. Step 5: Solve for x
    x = 7,193,878.45/3,871.01
  6. Step 6: Final answer
    x = 1,858.40

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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.