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Finding the Fourth Proportional to 1,971.33, 2,720.69 and 1,906.44

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Solution

The fourth proportional to 1,971.33, 2,720.69 and 1,906.44 is: 2,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.33 : 2,720.69 = 1,906.44 : x
  2. Step 2: Convert to fraction form
    1,971.33/2,720.69 = 1,906.44/x
  3. Step 3: Cross multiply
    1,971.33x = 2,720.69 × 1,906.44
  4. Step 4: Simplify right side
    1,971.33x = 5,186,832.24
  5. Step 5: Solve for x
    x = 5,186,832.24/1,971.33
  6. Step 6: Final answer
    x = 2,631.13

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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.