Home / 3,984.21-5,976.32-1,210.91

Finding the Fourth Proportional to 3,984.21, 5,976.32 and 1,210.91

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Solution

The fourth proportional to 3,984.21, 5,976.32 and 1,210.91 is: 1,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.21 : 5,976.32 = 1,210.91 : x
  2. Step 2: Convert to fraction form
    3,984.21/5,976.32 = 1,210.91/x
  3. Step 3: Cross multiply
    3,984.21x = 5,976.32 × 1,210.91
  4. Step 4: Simplify right side
    3,984.21x = 7,236,749.72
  5. Step 5: Solve for x
    x = 7,236,749.72/3,984.21
  6. Step 6: Final answer
    x = 1,816.36

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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.