Home / 3,985.53-5,979.24-1,212.36

Finding the Fourth Proportional to 3,985.53, 5,979.24 and 1,212.36

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Solution

The fourth proportional to 3,985.53, 5,979.24 and 1,212.36 is: 1,818.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.53 : 5,979.24 = 1,212.36 : x
  2. Step 2: Convert to fraction form
    3,985.53/5,979.24 = 1,212.36/x
  3. Step 3: Cross multiply
    3,985.53x = 5,979.24 × 1,212.36
  4. Step 4: Simplify right side
    3,985.53x = 7,248,991.41
  5. Step 5: Solve for x
    x = 7,248,991.41/3,985.53
  6. Step 6: Final answer
    x = 1,818.83

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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.