Home / 3,993.06-5,985.39-1,911.78

Finding the Fourth Proportional to 3,993.06, 5,985.39 and 1,911.78

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Solution

The fourth proportional to 3,993.06, 5,985.39 and 1,911.78 is: 2,865.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.06 : 5,985.39 = 1,911.78 : x
  2. Step 2: Convert to fraction form
    3,993.06/5,985.39 = 1,911.78/x
  3. Step 3: Cross multiply
    3,993.06x = 5,985.39 × 1,911.78
  4. Step 4: Simplify right side
    3,993.06x = 11,442,748.89
  5. Step 5: Solve for x
    x = 11,442,748.89/3,993.06
  6. Step 6: Final answer
    x = 2,865.66

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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.