Home / 3,187.80-4,399.16-1,771.56

Finding the Fourth Proportional to 3,187.80, 4,399.16 and 1,771.56

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Solution

The fourth proportional to 3,187.80, 4,399.16 and 1,771.56 is: 2,444.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.80 : 4,399.16 = 1,771.56 : x
  2. Step 2: Convert to fraction form
    3,187.80/4,399.16 = 1,771.56/x
  3. Step 3: Cross multiply
    3,187.80x = 4,399.16 × 1,771.56
  4. Step 4: Simplify right side
    3,187.80x = 7,793,375.89
  5. Step 5: Solve for x
    x = 7,793,375.89/3,187.80
  6. Step 6: Final answer
    x = 2,444.75

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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.