Home / 3,291.36-4,936.32-1,239.36

Finding the Fourth Proportional to 3,291.36, 4,936.32 and 1,239.36

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Solution

The fourth proportional to 3,291.36, 4,936.32 and 1,239.36 is: 1,858.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.36 : 4,936.32 = 1,239.36 : x
  2. Step 2: Convert to fraction form
    3,291.36/4,936.32 = 1,239.36/x
  3. Step 3: Cross multiply
    3,291.36x = 4,936.32 × 1,239.36
  4. Step 4: Simplify right side
    3,291.36x = 6,117,877.56
  5. Step 5: Solve for x
    x = 6,117,877.56/3,291.36
  6. Step 6: Final answer
    x = 1,858.77

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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.