Home / 2,271.78-3,408.96-1,231.80

Finding the Fourth Proportional to 2,271.78, 3,408.96 and 1,231.80

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Solution

The fourth proportional to 2,271.78, 3,408.96 and 1,231.80 is: 1,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.78 : 3,408.96 = 1,231.80 : x
  2. Step 2: Convert to fraction form
    2,271.78/3,408.96 = 1,231.80/x
  3. Step 3: Cross multiply
    2,271.78x = 3,408.96 × 1,231.80
  4. Step 4: Simplify right side
    2,271.78x = 4,199,156.93
  5. Step 5: Solve for x
    x = 4,199,156.93/2,271.78
  6. Step 6: Final answer
    x = 1,848.40

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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.