Home / 3,559.42-4,912-1,987.52

Finding the Fourth Proportional to 3,559.42, 4,912 and 1,987.52

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Solution

The fourth proportional to 3,559.42, 4,912 and 1,987.52 is: 2,742.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.42 : 4,912 = 1,987.52 : x
  2. Step 2: Convert to fraction form
    3,559.42/4,912 = 1,987.52/x
  3. Step 3: Cross multiply
    3,559.42x = 4,912 × 1,987.52
  4. Step 4: Simplify right side
    3,559.42x = 9,762,698.24
  5. Step 5: Solve for x
    x = 9,762,698.24/3,559.42
  6. Step 6: Final answer
    x = 2,742.78

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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.