Home / 7,120.68-10,682.23-2,190.21

Finding the Fourth Proportional to 7,120.68, 10,682.23 and 2,190.21

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Solution

The fourth proportional to 7,120.68, 10,682.23 and 2,190.21 is: 3,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.68 : 10,682.23 = 2,190.21 : x
  2. Step 2: Convert to fraction form
    7,120.68/10,682.23 = 2,190.21/x
  3. Step 3: Cross multiply
    7,120.68x = 10,682.23 × 2,190.21
  4. Step 4: Simplify right side
    7,120.68x = 23,396,285.54
  5. Step 5: Solve for x
    x = 23,396,285.54/7,120.68
  6. Step 6: Final answer
    x = 3,285.68

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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.