Home / 3,759.89-5,189.28-2,188.91

Finding the Fourth Proportional to 3,759.89, 5,189.28 and 2,188.91

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Solution

The fourth proportional to 3,759.89, 5,189.28 and 2,188.91 is: 3,021.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.89 : 5,189.28 = 2,188.91 : x
  2. Step 2: Convert to fraction form
    3,759.89/5,189.28 = 2,188.91/x
  3. Step 3: Cross multiply
    3,759.89x = 5,189.28 × 2,188.91
  4. Step 4: Simplify right side
    3,759.89x = 11,358,866.88
  5. Step 5: Solve for x
    x = 11,358,866.88/3,759.89
  6. Step 6: Final answer
    x = 3,021.06

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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.