Home / 2,311.79-3,467.45-1,271.45

Finding the Fourth Proportional to 2,311.79, 3,467.45 and 1,271.45

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Solution

The fourth proportional to 2,311.79, 3,467.45 and 1,271.45 is: 1,907.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.79 : 3,467.45 = 1,271.45 : x
  2. Step 2: Convert to fraction form
    2,311.79/3,467.45 = 1,271.45/x
  3. Step 3: Cross multiply
    2,311.79x = 3,467.45 × 1,271.45
  4. Step 4: Simplify right side
    2,311.79x = 4,408,675.14
  5. Step 5: Solve for x
    x = 4,408,675.14/2,311.79
  6. Step 6: Final answer
    x = 1,907.04

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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.