Home / 2,311.54-3,469.36-1,079.63

Finding the Fourth Proportional to 2,311.54, 3,469.36 and 1,079.63

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Solution

The fourth proportional to 2,311.54, 3,469.36 and 1,079.63 is: 1,620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.54 : 3,469.36 = 1,079.63 : x
  2. Step 2: Convert to fraction form
    2,311.54/3,469.36 = 1,079.63/x
  3. Step 3: Cross multiply
    2,311.54x = 3,469.36 × 1,079.63
  4. Step 4: Simplify right side
    2,311.54x = 3,745,607.79
  5. Step 5: Solve for x
    x = 3,745,607.79/2,311.54
  6. Step 6: Final answer
    x = 1,620.40

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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.