Home / 3,759.74-5,188.35-2,187.80

Finding the Fourth Proportional to 3,759.74, 5,188.35 and 2,187.80

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Solution

The fourth proportional to 3,759.74, 5,188.35 and 2,187.80 is: 3,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.74 : 5,188.35 = 2,187.80 : x
  2. Step 2: Convert to fraction form
    3,759.74/5,188.35 = 2,187.80/x
  3. Step 3: Cross multiply
    3,759.74x = 5,188.35 × 2,187.80
  4. Step 4: Simplify right side
    3,759.74x = 11,351,072.13
  5. Step 5: Solve for x
    x = 11,351,072.13/3,759.74
  6. Step 6: Final answer
    x = 3,019.11

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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.