Home / 6,821.02-10,225.82-2,138.07

Finding the Fourth Proportional to 6,821.02, 10,225.82 and 2,138.07

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Solution

The fourth proportional to 6,821.02, 10,225.82 and 2,138.07 is: 3,205.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.02 : 10,225.82 = 2,138.07 : x
  2. Step 2: Convert to fraction form
    6,821.02/10,225.82 = 2,138.07/x
  3. Step 3: Cross multiply
    6,821.02x = 10,225.82 × 2,138.07
  4. Step 4: Simplify right side
    6,821.02x = 21,863,524.31
  5. Step 5: Solve for x
    x = 21,863,524.31/6,821.02
  6. Step 6: Final answer
    x = 3,205.32

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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.