Home / 3,431.26-5,146.88-1,239.99

Finding the Fourth Proportional to 3,431.26, 5,146.88 and 1,239.99

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Solution

The fourth proportional to 3,431.26, 5,146.88 and 1,239.99 is: 1,859.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.26 : 5,146.88 = 1,239.99 : x
  2. Step 2: Convert to fraction form
    3,431.26/5,146.88 = 1,239.99/x
  3. Step 3: Cross multiply
    3,431.26x = 5,146.88 × 1,239.99
  4. Step 4: Simplify right side
    3,431.26x = 6,382,079.73
  5. Step 5: Solve for x
    x = 6,382,079.73/3,431.26
  6. Step 6: Final answer
    x = 1,859.98

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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.