Home / 6,921.21-9,550.60-3,936.45

Finding the Fourth Proportional to 6,921.21, 9,550.60 and 3,936.45

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Solution

The fourth proportional to 6,921.21, 9,550.60 and 3,936.45 is: 5,431.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.21 : 9,550.60 = 3,936.45 : x
  2. Step 2: Convert to fraction form
    6,921.21/9,550.60 = 3,936.45/x
  3. Step 3: Cross multiply
    6,921.21x = 9,550.60 × 3,936.45
  4. Step 4: Simplify right side
    6,921.21x = 37,595,449.53
  5. Step 5: Solve for x
    x = 37,595,449.53/6,921.21
  6. Step 6: Final answer
    x = 5,431.92

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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.