Home / 1,840.94-2,757.90-1,428.04

Finding the Fourth Proportional to 1,840.94, 2,757.90 and 1,428.04

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Solution

The fourth proportional to 1,840.94, 2,757.90 and 1,428.04 is: 2,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.94 : 2,757.90 = 1,428.04 : x
  2. Step 2: Convert to fraction form
    1,840.94/2,757.90 = 1,428.04/x
  3. Step 3: Cross multiply
    1,840.94x = 2,757.90 × 1,428.04
  4. Step 4: Simplify right side
    1,840.94x = 3,938,391.52
  5. Step 5: Solve for x
    x = 3,938,391.52/1,840.94
  6. Step 6: Final answer
    x = 2,139.34

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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.