Home / 2,986.44-4,478.52-1,038.12

Finding the Fourth Proportional to 2,986.44, 4,478.52 and 1,038.12

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Solution

The fourth proportional to 2,986.44, 4,478.52 and 1,038.12 is: 1,556.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.44 : 4,478.52 = 1,038.12 : x
  2. Step 2: Convert to fraction form
    2,986.44/4,478.52 = 1,038.12/x
  3. Step 3: Cross multiply
    2,986.44x = 4,478.52 × 1,038.12
  4. Step 4: Simplify right side
    2,986.44x = 4,649,241.18
  5. Step 5: Solve for x
    x = 4,649,241.18/2,986.44
  6. Step 6: Final answer
    x = 1,556.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.