Home / 3,620.06-5,430.92-1,311.56

Finding the Fourth Proportional to 3,620.06, 5,430.92 and 1,311.56

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Solution

The fourth proportional to 3,620.06, 5,430.92 and 1,311.56 is: 1,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.06 : 5,430.92 = 1,311.56 : x
  2. Step 2: Convert to fraction form
    3,620.06/5,430.92 = 1,311.56/x
  3. Step 3: Cross multiply
    3,620.06x = 5,430.92 × 1,311.56
  4. Step 4: Simplify right side
    3,620.06x = 7,122,977.44
  5. Step 5: Solve for x
    x = 7,122,977.44/3,620.06
  6. Step 6: Final answer
    x = 1,967.64

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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.