Home / 3,918.06-5,877.27-1,321.02

Finding the Fourth Proportional to 3,918.06, 5,877.27 and 1,321.02

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Solution

The fourth proportional to 3,918.06, 5,877.27 and 1,321.02 is: 1,981.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.06 : 5,877.27 = 1,321.02 : x
  2. Step 2: Convert to fraction form
    3,918.06/5,877.27 = 1,321.02/x
  3. Step 3: Cross multiply
    3,918.06x = 5,877.27 × 1,321.02
  4. Step 4: Simplify right side
    3,918.06x = 7,763,991.22
  5. Step 5: Solve for x
    x = 7,763,991.22/3,918.06
  6. Step 6: Final answer
    x = 1,981.59

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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.