Home / 2,918.75-4,032.26-1,912.85

Finding the Fourth Proportional to 2,918.75, 4,032.26 and 1,912.85

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Solution

The fourth proportional to 2,918.75, 4,032.26 and 1,912.85 is: 2,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.75 : 4,032.26 = 1,912.85 : x
  2. Step 2: Convert to fraction form
    2,918.75/4,032.26 = 1,912.85/x
  3. Step 3: Cross multiply
    2,918.75x = 4,032.26 × 1,912.85
  4. Step 4: Simplify right side
    2,918.75x = 7,713,098.74
  5. Step 5: Solve for x
    x = 7,713,098.74/2,918.75
  6. Step 6: Final answer
    x = 2,642.61

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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.