Home / 3,759.90-5,189.28-2,188.92

Finding the Fourth Proportional to 3,759.90, 5,189.28 and 2,188.92

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Solution

The fourth proportional to 3,759.90, 5,189.28 and 2,188.92 is: 3,021.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.90 : 5,189.28 = 2,188.92 : x
  2. Step 2: Convert to fraction form
    3,759.90/5,189.28 = 2,188.92/x
  3. Step 3: Cross multiply
    3,759.90x = 5,189.28 × 2,188.92
  4. Step 4: Simplify right side
    3,759.90x = 11,358,918.78
  5. Step 5: Solve for x
    x = 11,358,918.78/3,759.90
  6. Step 6: Final answer
    x = 3,021.07

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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.