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Finding the Fourth Proportional to 6,821.75, 10,232.06 and 1,891.50

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Solution

The fourth proportional to 6,821.75, 10,232.06 and 1,891.50 is: 2,837.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.75 : 10,232.06 = 1,891.50 : x
  2. Step 2: Convert to fraction form
    6,821.75/10,232.06 = 1,891.50/x
  3. Step 3: Cross multiply
    6,821.75x = 10,232.06 × 1,891.50
  4. Step 4: Simplify right side
    6,821.75x = 19,353,932.03
  5. Step 5: Solve for x
    x = 19,353,932.03/6,821.75
  6. Step 6: Final answer
    x = 2,837.09

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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.