Home / 1,235.96-1,853.25-939.57

Finding the Fourth Proportional to 1,235.96, 1,853.25 and 939.57

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Solution

The fourth proportional to 1,235.96, 1,853.25 and 939.57 is: 1,408.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.96 : 1,853.25 = 939.57 : x
  2. Step 2: Convert to fraction form
    1,235.96/1,853.25 = 939.57/x
  3. Step 3: Cross multiply
    1,235.96x = 1,853.25 × 939.57
  4. Step 4: Simplify right side
    1,235.96x = 1,741,271.19
  5. Step 5: Solve for x
    x = 1,741,271.19/1,235.96
  6. Step 6: Final answer
    x = 1,408.84

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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.