Home / 3,559.85-4,912.60-1,987.95

Finding the Fourth Proportional to 3,559.85, 4,912.60 and 1,987.95

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Solution

The fourth proportional to 3,559.85, 4,912.60 and 1,987.95 is: 2,743.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.85 : 4,912.60 = 1,987.95 : x
  2. Step 2: Convert to fraction form
    3,559.85/4,912.60 = 1,987.95/x
  3. Step 3: Cross multiply
    3,559.85x = 4,912.60 × 1,987.95
  4. Step 4: Simplify right side
    3,559.85x = 9,765,992.72
  5. Step 5: Solve for x
    x = 9,765,992.72/3,559.85
  6. Step 6: Final answer
    x = 2,743.37

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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.