Home / 3,559.82-4,912.08-1,987.98

Finding the Fourth Proportional to 3,559.82, 4,912.08 and 1,987.98

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Solution

The fourth proportional to 3,559.82, 4,912.08 and 1,987.98 is: 2,743.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.82 : 4,912.08 = 1,987.98 : x
  2. Step 2: Convert to fraction form
    3,559.82/4,912.08 = 1,987.98/x
  3. Step 3: Cross multiply
    3,559.82x = 4,912.08 × 1,987.98
  4. Step 4: Simplify right side
    3,559.82x = 9,765,116.80
  5. Step 5: Solve for x
    x = 9,765,116.80/3,559.82
  6. Step 6: Final answer
    x = 2,743.15

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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.