Home / 3,985.43-5,976.30-1,212.39

Finding the Fourth Proportional to 3,985.43, 5,976.30 and 1,212.39

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Solution

The fourth proportional to 3,985.43, 5,976.30 and 1,212.39 is: 1,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.43 : 5,976.30 = 1,212.39 : x
  2. Step 2: Convert to fraction form
    3,985.43/5,976.30 = 1,212.39/x
  3. Step 3: Cross multiply
    3,985.43x = 5,976.30 × 1,212.39
  4. Step 4: Simplify right side
    3,985.43x = 7,245,606.36
  5. Step 5: Solve for x
    x = 7,245,606.36/3,985.43
  6. Step 6: Final answer
    x = 1,818.03

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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.