Home / 3,936.56-5,433.84-2,679.20

Finding the Fourth Proportional to 3,936.56, 5,433.84 and 2,679.20

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Solution

The fourth proportional to 3,936.56, 5,433.84 and 2,679.20 is: 3,698.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.56 : 5,433.84 = 2,679.20 : x
  2. Step 2: Convert to fraction form
    3,936.56/5,433.84 = 2,679.20/x
  3. Step 3: Cross multiply
    3,936.56x = 5,433.84 × 2,679.20
  4. Step 4: Simplify right side
    3,936.56x = 14,558,344.13
  5. Step 5: Solve for x
    x = 14,558,344.13/3,936.56
  6. Step 6: Final answer
    x = 3,698.24

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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.