Home / 3,996.58-5,515.80-2,881.21

Finding the Fourth Proportional to 3,996.58, 5,515.80 and 2,881.21

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Solution

The fourth proportional to 3,996.58, 5,515.80 and 2,881.21 is: 3,976.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.58 : 5,515.80 = 2,881.21 : x
  2. Step 2: Convert to fraction form
    3,996.58/5,515.80 = 2,881.21/x
  3. Step 3: Cross multiply
    3,996.58x = 5,515.80 × 2,881.21
  4. Step 4: Simplify right side
    3,996.58x = 15,892,178.12
  5. Step 5: Solve for x
    x = 15,892,178.12/3,996.58
  6. Step 6: Final answer
    x = 3,976.44

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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.