Home / 3,932.45-5,426.80-2,164.12

Finding the Fourth Proportional to 3,932.45, 5,426.80 and 2,164.12

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Solution

The fourth proportional to 3,932.45, 5,426.80 and 2,164.12 is: 2,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.45 : 5,426.80 = 2,164.12 : x
  2. Step 2: Convert to fraction form
    3,932.45/5,426.80 = 2,164.12/x
  3. Step 3: Cross multiply
    3,932.45x = 5,426.80 × 2,164.12
  4. Step 4: Simplify right side
    3,932.45x = 11,744,227.44
  5. Step 5: Solve for x
    x = 11,744,227.44/3,932.45
  6. Step 6: Final answer
    x = 2,986.49

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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.