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Finding the Fourth Proportional to 2,696.50, 3,721.08 and 1,517.50

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Solution

The fourth proportional to 2,696.50, 3,721.08 and 1,517.50 is: 2,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696.50 : 3,721.08 = 1,517.50 : x
  2. Step 2: Convert to fraction form
    2,696.50/3,721.08 = 1,517.50/x
  3. Step 3: Cross multiply
    2,696.50x = 3,721.08 × 1,517.50
  4. Step 4: Simplify right side
    2,696.50x = 5,646,738.90
  5. Step 5: Solve for x
    x = 5,646,738.90/2,696.50
  6. Step 6: Final answer
    x = 2,094.10

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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.