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Finding the Fourth Proportional to 2,856.29, 3,940.92 and 1,736.94

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Solution

The fourth proportional to 2,856.29, 3,940.92 and 1,736.94 is: 2,396.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.29 : 3,940.92 = 1,736.94 : x
  2. Step 2: Convert to fraction form
    2,856.29/3,940.92 = 1,736.94/x
  3. Step 3: Cross multiply
    2,856.29x = 3,940.92 × 1,736.94
  4. Step 4: Simplify right side
    2,856.29x = 6,845,141.58
  5. Step 5: Solve for x
    x = 6,845,141.58/2,856.29
  6. Step 6: Final answer
    x = 2,396.51

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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.