Home / 5,208.12-7,187.19-2,939.31

Finding the Fourth Proportional to 5,208.12, 7,187.19 and 2,939.31

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Solution

The fourth proportional to 5,208.12, 7,187.19 and 2,939.31 is: 4,056.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.12 : 7,187.19 = 2,939.31 : x
  2. Step 2: Convert to fraction form
    5,208.12/7,187.19 = 2,939.31/x
  3. Step 3: Cross multiply
    5,208.12x = 7,187.19 × 2,939.31
  4. Step 4: Simplify right side
    5,208.12x = 21,125,379.44
  5. Step 5: Solve for x
    x = 21,125,379.44/5,208.12
  6. Step 6: Final answer
    x = 4,056.24

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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.