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Finding the Fourth Proportional to 2,836.99, 3,915.76 and 1,893.07

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Solution

The fourth proportional to 2,836.99, 3,915.76 and 1,893.07 is: 2,612.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.99 : 3,915.76 = 1,893.07 : x
  2. Step 2: Convert to fraction form
    2,836.99/3,915.76 = 1,893.07/x
  3. Step 3: Cross multiply
    2,836.99x = 3,915.76 × 1,893.07
  4. Step 4: Simplify right side
    2,836.99x = 7,412,788.20
  5. Step 5: Solve for x
    x = 7,412,788.20/2,836.99
  6. Step 6: Final answer
    x = 2,612.91

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1.5x scale

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.