Home / 1,943.88-2,915.82-1,289.94

Finding the Fourth Proportional to 1,943.88, 2,915.82 and 1,289.94

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Solution

The fourth proportional to 1,943.88, 2,915.82 and 1,289.94 is: 1,934.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.88 : 2,915.82 = 1,289.94 : x
  2. Step 2: Convert to fraction form
    1,943.88/2,915.82 = 1,289.94/x
  3. Step 3: Cross multiply
    1,943.88x = 2,915.82 × 1,289.94
  4. Step 4: Simplify right side
    1,943.88x = 3,761,232.85
  5. Step 5: Solve for x
    x = 3,761,232.85/1,943.88
  6. Step 6: Final answer
    x = 1,934.91

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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.