Home / 3,953.58-5,455.67-2,185.05

Finding the Fourth Proportional to 3,953.58, 5,455.67 and 2,185.05

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Solution

The fourth proportional to 3,953.58, 5,455.67 and 2,185.05 is: 3,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.58 : 5,455.67 = 2,185.05 : x
  2. Step 2: Convert to fraction form
    3,953.58/5,455.67 = 2,185.05/x
  3. Step 3: Cross multiply
    3,953.58x = 5,455.67 × 2,185.05
  4. Step 4: Simplify right side
    3,953.58x = 11,920,911.73
  5. Step 5: Solve for x
    x = 11,920,911.73/3,953.58
  6. Step 6: Final answer
    x = 3,015.22

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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.