Home / 3,122.60-4,311.30-2,789.96

Finding the Fourth Proportional to 3,122.60, 4,311.30 and 2,789.96

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Solution

The fourth proportional to 3,122.60, 4,311.30 and 2,789.96 is: 3,852.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.60 : 4,311.30 = 2,789.96 : x
  2. Step 2: Convert to fraction form
    3,122.60/4,311.30 = 2,789.96/x
  3. Step 3: Cross multiply
    3,122.60x = 4,311.30 × 2,789.96
  4. Step 4: Simplify right side
    3,122.60x = 12,028,354.55
  5. Step 5: Solve for x
    x = 12,028,354.55/3,122.60
  6. Step 6: Final answer
    x = 3,852.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.