Home / 3,187.75-4,399.32-1,790.50

Finding the Fourth Proportional to 3,187.75, 4,399.32 and 1,790.50

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Solution

The fourth proportional to 3,187.75, 4,399.32 and 1,790.50 is: 2,471.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.75 : 4,399.32 = 1,790.50 : x
  2. Step 2: Convert to fraction form
    3,187.75/4,399.32 = 1,790.50/x
  3. Step 3: Cross multiply
    3,187.75x = 4,399.32 × 1,790.50
  4. Step 4: Simplify right side
    3,187.75x = 7,876,982.46
  5. Step 5: Solve for x
    x = 7,876,982.46/3,187.75
  6. Step 6: Final answer
    x = 2,471.02

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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.