Home / 7,120.22-10,682.16-2,189.91

Finding the Fourth Proportional to 7,120.22, 10,682.16 and 2,189.91

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Solution

The fourth proportional to 7,120.22, 10,682.16 and 2,189.91 is: 3,285.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.22 : 10,682.16 = 2,189.91 : x
  2. Step 2: Convert to fraction form
    7,120.22/10,682.16 = 2,189.91/x
  3. Step 3: Cross multiply
    7,120.22x = 10,682.16 × 2,189.91
  4. Step 4: Simplify right side
    7,120.22x = 23,392,910.12
  5. Step 5: Solve for x
    x = 23,392,910.12/7,120.22
  6. Step 6: Final answer
    x = 3,285.42

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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.