Home / 2,838.30-3,915.70-1,789.75

Finding the Fourth Proportional to 2,838.30, 3,915.70 and 1,789.75

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Solution

The fourth proportional to 2,838.30, 3,915.70 and 1,789.75 is: 2,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.30 : 3,915.70 = 1,789.75 : x
  2. Step 2: Convert to fraction form
    2,838.30/3,915.70 = 1,789.75/x
  3. Step 3: Cross multiply
    2,838.30x = 3,915.70 × 1,789.75
  4. Step 4: Simplify right side
    2,838.30x = 7,008,124.08
  5. Step 5: Solve for x
    x = 7,008,124.08/2,838.30
  6. Step 6: Final answer
    x = 2,469.13

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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.