Home / 2,778.33-4,167.48-1,318.53

Finding the Fourth Proportional to 2,778.33, 4,167.48 and 1,318.53

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Solution

The fourth proportional to 2,778.33, 4,167.48 and 1,318.53 is: 1,977.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.33 : 4,167.48 = 1,318.53 : x
  2. Step 2: Convert to fraction form
    2,778.33/4,167.48 = 1,318.53/x
  3. Step 3: Cross multiply
    2,778.33x = 4,167.48 × 1,318.53
  4. Step 4: Simplify right side
    2,778.33x = 5,494,947.40
  5. Step 5: Solve for x
    x = 5,494,947.40/2,778.33
  6. Step 6: Final answer
    x = 1,977.79

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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.