Home / 3,953.88-5,455.89-2,185.38

Finding the Fourth Proportional to 3,953.88, 5,455.89 and 2,185.38

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Solution

The fourth proportional to 3,953.88, 5,455.89 and 2,185.38 is: 3,015.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.88 : 5,455.89 = 2,185.38 : x
  2. Step 2: Convert to fraction form
    3,953.88/5,455.89 = 2,185.38/x
  3. Step 3: Cross multiply
    3,953.88x = 5,455.89 × 2,185.38
  4. Step 4: Simplify right side
    3,953.88x = 11,923,192.89
  5. Step 5: Solve for x
    x = 11,923,192.89/3,953.88
  6. Step 6: Final answer
    x = 3,015.57

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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.