Home / 3,955.20-5,456.46-2,382.39

Finding the Fourth Proportional to 3,955.20, 5,456.46 and 2,382.39

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Solution

The fourth proportional to 3,955.20, 5,456.46 and 2,382.39 is: 3,286.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.20 : 5,456.46 = 2,382.39 : x
  2. Step 2: Convert to fraction form
    3,955.20/5,456.46 = 2,382.39/x
  3. Step 3: Cross multiply
    3,955.20x = 5,456.46 × 2,382.39
  4. Step 4: Simplify right side
    3,955.20x = 12,999,415.74
  5. Step 5: Solve for x
    x = 12,999,415.74/3,955.20
  6. Step 6: Final answer
    x = 3,286.66

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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.