Home / 6,825.45-9,416.64-3,991.80

Finding the Fourth Proportional to 6,825.45, 9,416.64 and 3,991.80

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Solution

The fourth proportional to 6,825.45, 9,416.64 and 3,991.80 is: 5,507.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,825.45 : 9,416.64 = 3,991.80 : x
  2. Step 2: Convert to fraction form
    6,825.45/9,416.64 = 3,991.80/x
  3. Step 3: Cross multiply
    6,825.45x = 9,416.64 × 3,991.80
  4. Step 4: Simplify right side
    6,825.45x = 37,589,343.55
  5. Step 5: Solve for x
    x = 37,589,343.55/6,825.45
  6. Step 6: Final answer
    x = 5,507.23

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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.