Home / 6,690.99-9,234.55-3,857.81

Finding the Fourth Proportional to 6,690.99, 9,234.55 and 3,857.81

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Solution

The fourth proportional to 6,690.99, 9,234.55 and 3,857.81 is: 5,324.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.99 : 9,234.55 = 3,857.81 : x
  2. Step 2: Convert to fraction form
    6,690.99/9,234.55 = 3,857.81/x
  3. Step 3: Cross multiply
    6,690.99x = 9,234.55 × 3,857.81
  4. Step 4: Simplify right side
    6,690.99x = 35,625,120.05
  5. Step 5: Solve for x
    x = 35,625,120.05/6,690.99
  6. Step 6: Final answer
    x = 5,324.34

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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.