Home / 3,759.25-5,187.77-2,188.39

Finding the Fourth Proportional to 3,759.25, 5,187.77 and 2,188.39

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Solution

The fourth proportional to 3,759.25, 5,187.77 and 2,188.39 is: 3,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.25 : 5,187.77 = 2,188.39 : x
  2. Step 2: Convert to fraction form
    3,759.25/5,187.77 = 2,188.39/x
  3. Step 3: Cross multiply
    3,759.25x = 5,187.77 × 2,188.39
  4. Step 4: Simplify right side
    3,759.25x = 11,352,853.05
  5. Step 5: Solve for x
    x = 11,352,853.05/3,759.25
  6. Step 6: Final answer
    x = 3,019.98

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1.5x scale

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.