Home / 3,759.40-5,187.99-2,187.55

Finding the Fourth Proportional to 3,759.40, 5,187.99 and 2,187.55

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Solution

The fourth proportional to 3,759.40, 5,187.99 and 2,187.55 is: 3,018.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.40 : 5,187.99 = 2,187.55 : x
  2. Step 2: Convert to fraction form
    3,759.40/5,187.99 = 2,187.55/x
  3. Step 3: Cross multiply
    3,759.40x = 5,187.99 × 2,187.55
  4. Step 4: Simplify right side
    3,759.40x = 11,348,987.52
  5. Step 5: Solve for x
    x = 11,348,987.52/3,759.40
  6. Step 6: Final answer
    x = 3,018.83

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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.