Home / 3,955.20-5,458.24-2,186.81

Finding the Fourth Proportional to 3,955.20, 5,458.24 and 2,186.81

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Solution

The fourth proportional to 3,955.20, 5,458.24 and 2,186.81 is: 3,017.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.20 : 5,458.24 = 2,186.81 : x
  2. Step 2: Convert to fraction form
    3,955.20/5,458.24 = 2,186.81/x
  3. Step 3: Cross multiply
    3,955.20x = 5,458.24 × 2,186.81
  4. Step 4: Simplify right side
    3,955.20x = 11,936,133.81
  5. Step 5: Solve for x
    x = 11,936,133.81/3,955.20
  6. Step 6: Final answer
    x = 3,017.83

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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.