Home / 3,908.51-5,863.64-1,311.38

Finding the Fourth Proportional to 3,908.51, 5,863.64 and 1,311.38

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Solution

The fourth proportional to 3,908.51, 5,863.64 and 1,311.38 is: 1,967.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.51 : 5,863.64 = 1,311.38 : x
  2. Step 2: Convert to fraction form
    3,908.51/5,863.64 = 1,311.38/x
  3. Step 3: Cross multiply
    3,908.51x = 5,863.64 × 1,311.38
  4. Step 4: Simplify right side
    3,908.51x = 7,689,460.22
  5. Step 5: Solve for x
    x = 7,689,460.22/3,908.51
  6. Step 6: Final answer
    x = 1,967.36

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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.