Home / 3,953.86-5,456.30-2,185.54

Finding the Fourth Proportional to 3,953.86, 5,456.30 and 2,185.54

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Solution

The fourth proportional to 3,953.86, 5,456.30 and 2,185.54 is: 3,016.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.86 : 5,456.30 = 2,185.54 : x
  2. Step 2: Convert to fraction form
    3,953.86/5,456.30 = 2,185.54/x
  3. Step 3: Cross multiply
    3,953.86x = 5,456.30 × 2,185.54
  4. Step 4: Simplify right side
    3,953.86x = 11,924,961.90
  5. Step 5: Solve for x
    x = 11,924,961.90/3,953.86
  6. Step 6: Final answer
    x = 3,016.03

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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.