Home / 1,911.88-2,639.82-1,469.08

Finding the Fourth Proportional to 1,911.88, 2,639.82 and 1,469.08

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Solution

The fourth proportional to 1,911.88, 2,639.82 and 1,469.08 is: 2,028.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.88 : 2,639.82 = 1,469.08 : x
  2. Step 2: Convert to fraction form
    1,911.88/2,639.82 = 1,469.08/x
  3. Step 3: Cross multiply
    1,911.88x = 2,639.82 × 1,469.08
  4. Step 4: Simplify right side
    1,911.88x = 3,878,106.77
  5. Step 5: Solve for x
    x = 3,878,106.77/1,911.88
  6. Step 6: Final answer
    x = 2,028.43

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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.