Home / 7,620.21-11,431.22-2,688.83

Finding the Fourth Proportional to 7,620.21, 11,431.22 and 2,688.83

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Solution

The fourth proportional to 7,620.21, 11,431.22 and 2,688.83 is: 4,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.21 : 11,431.22 = 2,688.83 : x
  2. Step 2: Convert to fraction form
    7,620.21/11,431.22 = 2,688.83/x
  3. Step 3: Cross multiply
    7,620.21x = 11,431.22 × 2,688.83
  4. Step 4: Simplify right side
    7,620.21x = 30,736,607.27
  5. Step 5: Solve for x
    x = 30,736,607.27/7,620.21
  6. Step 6: Final answer
    x = 4,033.56

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1.5x scale

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.