Home / 6,919.80-9,549.84-3,936.60

Finding the Fourth Proportional to 6,919.80, 9,549.84 and 3,936.60

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Solution

The fourth proportional to 6,919.80, 9,549.84 and 3,936.60 is: 5,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.80 : 9,549.84 = 3,936.60 : x
  2. Step 2: Convert to fraction form
    6,919.80/9,549.84 = 3,936.60/x
  3. Step 3: Cross multiply
    6,919.80x = 9,549.84 × 3,936.60
  4. Step 4: Simplify right side
    6,919.80x = 37,593,912.14
  5. Step 5: Solve for x
    x = 37,593,912.14/6,919.80
  6. Step 6: Final answer
    x = 5,432.80

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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.