Home / 1,912.47-2,868.53-613.59

Finding the Fourth Proportional to 1,912.47, 2,868.53 and 613.59

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Solution

The fourth proportional to 1,912.47, 2,868.53 and 613.59 is: 920.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.47 : 2,868.53 = 613.59 : x
  2. Step 2: Convert to fraction form
    1,912.47/2,868.53 = 613.59/x
  3. Step 3: Cross multiply
    1,912.47x = 2,868.53 × 613.59
  4. Step 4: Simplify right side
    1,912.47x = 1,760,098.25
  5. Step 5: Solve for x
    x = 1,760,098.25/1,912.47
  6. Step 6: Final answer
    x = 920.33

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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.