Home / 1,286.48-1,928.63-1,029.44

Finding the Fourth Proportional to 1,286.48, 1,928.63 and 1,029.44

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Solution

The fourth proportional to 1,286.48, 1,928.63 and 1,029.44 is: 1,543.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.48 : 1,928.63 = 1,029.44 : x
  2. Step 2: Convert to fraction form
    1,286.48/1,928.63 = 1,029.44/x
  3. Step 3: Cross multiply
    1,286.48x = 1,928.63 × 1,029.44
  4. Step 4: Simplify right side
    1,286.48x = 1,985,408.87
  5. Step 5: Solve for x
    x = 1,985,408.87/1,286.48
  6. Step 6: Final answer
    x = 1,543.29

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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.