Home / 3,559.44-4,912.20-1,987.50

Finding the Fourth Proportional to 3,559.44, 4,912.20 and 1,987.50

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Solution

The fourth proportional to 3,559.44, 4,912.20 and 1,987.50 is: 2,742.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.44 : 4,912.20 = 1,987.50 : x
  2. Step 2: Convert to fraction form
    3,559.44/4,912.20 = 1,987.50/x
  3. Step 3: Cross multiply
    3,559.44x = 4,912.20 × 1,987.50
  4. Step 4: Simplify right side
    3,559.44x = 9,762,997.50
  5. Step 5: Solve for x
    x = 9,762,997.50/3,559.44
  6. Step 6: Final answer
    x = 2,742.85

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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.