Home / 3,678.24-5,514-1,485.48

Finding the Fourth Proportional to 3,678.24, 5,514 and 1,485.48

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Solution

The fourth proportional to 3,678.24, 5,514 and 1,485.48 is: 2,226.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.24 : 5,514 = 1,485.48 : x
  2. Step 2: Convert to fraction form
    3,678.24/5,514 = 1,485.48/x
  3. Step 3: Cross multiply
    3,678.24x = 5,514 × 1,485.48
  4. Step 4: Simplify right side
    3,678.24x = 8,190,936.72
  5. Step 5: Solve for x
    x = 8,190,936.72/3,678.24
  6. Step 6: Final answer
    x = 2,226.86

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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.