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Finding the Fourth Proportional to 6,820.74, 10,231.74 and 1,890.36

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Solution

The fourth proportional to 6,820.74, 10,231.74 and 1,890.36 is: 2,835.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.74 : 10,231.74 = 1,890.36 : x
  2. Step 2: Convert to fraction form
    6,820.74/10,231.74 = 1,890.36/x
  3. Step 3: Cross multiply
    6,820.74x = 10,231.74 × 1,890.36
  4. Step 4: Simplify right side
    6,820.74x = 19,341,672.03
  5. Step 5: Solve for x
    x = 19,341,672.03/6,820.74
  6. Step 6: Final answer
    x = 2,835.71

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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.