Home / 3,989.10-5,983.83-1,216.17

Finding the Fourth Proportional to 3,989.10, 5,983.83 and 1,216.17

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Solution

The fourth proportional to 3,989.10, 5,983.83 and 1,216.17 is: 1,824.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.10 : 5,983.83 = 1,216.17 : x
  2. Step 2: Convert to fraction form
    3,989.10/5,983.83 = 1,216.17/x
  3. Step 3: Cross multiply
    3,989.10x = 5,983.83 × 1,216.17
  4. Step 4: Simplify right side
    3,989.10x = 7,277,354.53
  5. Step 5: Solve for x
    x = 7,277,354.53/3,989.10
  6. Step 6: Final answer
    x = 1,824.31

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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.