Home / 3,871.11-5,806.64-1,274.05

Finding the Fourth Proportional to 3,871.11, 5,806.64 and 1,274.05

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Solution

The fourth proportional to 3,871.11, 5,806.64 and 1,274.05 is: 1,911.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.11 : 5,806.64 = 1,274.05 : x
  2. Step 2: Convert to fraction form
    3,871.11/5,806.64 = 1,274.05/x
  3. Step 3: Cross multiply
    3,871.11x = 5,806.64 × 1,274.05
  4. Step 4: Simplify right side
    3,871.11x = 7,397,949.69
  5. Step 5: Solve for x
    x = 7,397,949.69/3,871.11
  6. Step 6: Final answer
    x = 1,911.07

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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.