Home / 6,821.61-10,231.39-1,890.73

Finding the Fourth Proportional to 6,821.61, 10,231.39 and 1,890.73

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Solution

The fourth proportional to 6,821.61, 10,231.39 and 1,890.73 is: 2,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.61 : 10,231.39 = 1,890.73 : x
  2. Step 2: Convert to fraction form
    6,821.61/10,231.39 = 1,890.73/x
  3. Step 3: Cross multiply
    6,821.61x = 10,231.39 × 1,890.73
  4. Step 4: Simplify right side
    6,821.61x = 19,344,796.01
  5. Step 5: Solve for x
    x = 19,344,796.01/6,821.61
  6. Step 6: Final answer
    x = 2,835.81

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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.