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Finding the Fourth Proportional to 6,805.15, 9,389.91 and 3,821.11

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Solution

The fourth proportional to 6,805.15, 9,389.91 and 3,821.11 is: 5,272.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,805.15 : 9,389.91 = 3,821.11 : x
  2. Step 2: Convert to fraction form
    6,805.15/9,389.91 = 3,821.11/x
  3. Step 3: Cross multiply
    6,805.15x = 9,389.91 × 3,821.11
  4. Step 4: Simplify right side
    6,805.15x = 35,879,879.00
  5. Step 5: Solve for x
    x = 35,879,879.00/6,805.15
  6. Step 6: Final answer
    x = 5,272.46

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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.