Home / 7,768.62-10,720.67-4,231.82

Finding the Fourth Proportional to 7,768.62, 10,720.67 and 4,231.82

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Solution

The fourth proportional to 7,768.62, 10,720.67 and 4,231.82 is: 5,839.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.62 : 10,720.67 = 4,231.82 : x
  2. Step 2: Convert to fraction form
    7,768.62/10,720.67 = 4,231.82/x
  3. Step 3: Cross multiply
    7,768.62x = 10,720.67 × 4,231.82
  4. Step 4: Simplify right side
    7,768.62x = 45,367,945.72
  5. Step 5: Solve for x
    x = 45,367,945.72/7,768.62
  6. Step 6: Final answer
    x = 5,839.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.