Home / 2,858.85-4,289.21-1,215.42

Finding the Fourth Proportional to 2,858.85, 4,289.21 and 1,215.42

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Solution

The fourth proportional to 2,858.85, 4,289.21 and 1,215.42 is: 1,823.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.85 : 4,289.21 = 1,215.42 : x
  2. Step 2: Convert to fraction form
    2,858.85/4,289.21 = 1,215.42/x
  3. Step 3: Cross multiply
    2,858.85x = 4,289.21 × 1,215.42
  4. Step 4: Simplify right side
    2,858.85x = 5,213,185.54
  5. Step 5: Solve for x
    x = 5,213,185.54/2,858.85
  6. Step 6: Final answer
    x = 1,823.53

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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.