Home / 5,612.34-8,421.36-3,979.38

Finding the Fourth Proportional to 5,612.34, 8,421.36 and 3,979.38

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Solution

The fourth proportional to 5,612.34, 8,421.36 and 3,979.38 is: 5,971.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.34 : 8,421.36 = 3,979.38 : x
  2. Step 2: Convert to fraction form
    5,612.34/8,421.36 = 3,979.38/x
  3. Step 3: Cross multiply
    5,612.34x = 8,421.36 × 3,979.38
  4. Step 4: Simplify right side
    5,612.34x = 33,511,791.56
  5. Step 5: Solve for x
    x = 33,511,791.56/5,612.34
  6. Step 6: Final answer
    x = 5,971.09

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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.