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Finding the Fourth Proportional to 2,696.84, 3,721.38 and 1,649.96

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Solution

The fourth proportional to 2,696.84, 3,721.38 and 1,649.96 is: 2,276.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696.84 : 3,721.38 = 1,649.96 : x
  2. Step 2: Convert to fraction form
    2,696.84/3,721.38 = 1,649.96/x
  3. Step 3: Cross multiply
    2,696.84x = 3,721.38 × 1,649.96
  4. Step 4: Simplify right side
    2,696.84x = 6,140,128.14
  5. Step 5: Solve for x
    x = 6,140,128.14/2,696.84
  6. Step 6: Final answer
    x = 2,276.79

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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.