Home / 1,912.71-2,868.93-614.07

Finding the Fourth Proportional to 1,912.71, 2,868.93 and 614.07

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Solution

The fourth proportional to 1,912.71, 2,868.93 and 614.07 is: 921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.71 : 2,868.93 = 614.07 : x
  2. Step 2: Convert to fraction form
    1,912.71/2,868.93 = 614.07/x
  3. Step 3: Cross multiply
    1,912.71x = 2,868.93 × 614.07
  4. Step 4: Simplify right side
    1,912.71x = 1,761,723.85
  5. Step 5: Solve for x
    x = 1,761,723.85/1,912.71
  6. Step 6: Final answer
    x = 921.06

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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.