Home / 1,286.12-1,930.67-1,029.26

Finding the Fourth Proportional to 1,286.12, 1,930.67 and 1,029.26

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Solution

The fourth proportional to 1,286.12, 1,930.67 and 1,029.26 is: 1,545.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.12 : 1,930.67 = 1,029.26 : x
  2. Step 2: Convert to fraction form
    1,286.12/1,930.67 = 1,029.26/x
  3. Step 3: Cross multiply
    1,286.12x = 1,930.67 × 1,029.26
  4. Step 4: Simplify right side
    1,286.12x = 1,987,146.60
  5. Step 5: Solve for x
    x = 1,987,146.60/1,286.12
  6. Step 6: Final answer
    x = 1,545.08

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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.