Home / 3,945.12-5,914.64-1,996.32

Finding the Fourth Proportional to 3,945.12, 5,914.64 and 1,996.32

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Solution

The fourth proportional to 3,945.12, 5,914.64 and 1,996.32 is: 2,992.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.12 : 5,914.64 = 1,996.32 : x
  2. Step 2: Convert to fraction form
    3,945.12/5,914.64 = 1,996.32/x
  3. Step 3: Cross multiply
    3,945.12x = 5,914.64 × 1,996.32
  4. Step 4: Simplify right side
    3,945.12x = 11,807,514.12
  5. Step 5: Solve for x
    x = 11,807,514.12/3,945.12
  6. Step 6: Final answer
    x = 2,992.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.