Home / 5,971.80-8,240.37-3,318.78

Finding the Fourth Proportional to 5,971.80, 8,240.37 and 3,318.78

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Solution

The fourth proportional to 5,971.80, 8,240.37 and 3,318.78 is: 4,579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,971.80 : 8,240.37 = 3,318.78 : x
  2. Step 2: Convert to fraction form
    5,971.80/8,240.37 = 3,318.78/x
  3. Step 3: Cross multiply
    5,971.80x = 8,240.37 × 3,318.78
  4. Step 4: Simplify right side
    5,971.80x = 27,347,975.15
  5. Step 5: Solve for x
    x = 27,347,975.15/5,971.80
  6. Step 6: Final answer
    x = 4,579.52

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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.