Home / 3,989.67-5,985.36-1,216.27

Finding the Fourth Proportional to 3,989.67, 5,985.36 and 1,216.27

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Solution

The fourth proportional to 3,989.67, 5,985.36 and 1,216.27 is: 1,824.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.67 : 5,985.36 = 1,216.27 : x
  2. Step 2: Convert to fraction form
    3,989.67/5,985.36 = 1,216.27/x
  3. Step 3: Cross multiply
    3,989.67x = 5,985.36 × 1,216.27
  4. Step 4: Simplify right side
    3,989.67x = 7,279,786.92
  5. Step 5: Solve for x
    x = 7,279,786.92/3,989.67
  6. Step 6: Final answer
    x = 1,824.66

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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.