Home / 2,628.79-3,942.49-1,241.76

Finding the Fourth Proportional to 2,628.79, 3,942.49 and 1,241.76

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Solution

The fourth proportional to 2,628.79, 3,942.49 and 1,241.76 is: 1,862.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.79 : 3,942.49 = 1,241.76 : x
  2. Step 2: Convert to fraction form
    2,628.79/3,942.49 = 1,241.76/x
  3. Step 3: Cross multiply
    2,628.79x = 3,942.49 × 1,241.76
  4. Step 4: Simplify right side
    2,628.79x = 4,895,626.38
  5. Step 5: Solve for x
    x = 4,895,626.38/2,628.79
  6. Step 6: Final answer
    x = 1,862.31

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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.