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Finding the Fourth Proportional to 1,751.49, 2,640.26 and 1,620.27

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Solution

The fourth proportional to 1,751.49, 2,640.26 and 1,620.27 is: 2,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.49 : 2,640.26 = 1,620.27 : x
  2. Step 2: Convert to fraction form
    1,751.49/2,640.26 = 1,620.27/x
  3. Step 3: Cross multiply
    1,751.49x = 2,640.26 × 1,620.27
  4. Step 4: Simplify right side
    1,751.49x = 4,277,938.12
  5. Step 5: Solve for x
    x = 4,277,938.12/1,751.49
  6. Step 6: Final answer
    x = 2,442.46

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.