Home / 7,120.88-10,682.34-2,190.93

Finding the Fourth Proportional to 7,120.88, 10,682.34 and 2,190.93

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Solution

The fourth proportional to 7,120.88, 10,682.34 and 2,190.93 is: 3,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.88 : 10,682.34 = 2,190.93 : x
  2. Step 2: Convert to fraction form
    7,120.88/10,682.34 = 2,190.93/x
  3. Step 3: Cross multiply
    7,120.88x = 10,682.34 × 2,190.93
  4. Step 4: Simplify right side
    7,120.88x = 23,404,259.18
  5. Step 5: Solve for x
    x = 23,404,259.18/7,120.88
  6. Step 6: Final answer
    x = 3,286.71

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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.