Home / 2,721.68-3,757.72-2,091.08

Finding the Fourth Proportional to 2,721.68, 3,757.72 and 2,091.08

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Solution

The fourth proportional to 2,721.68, 3,757.72 and 2,091.08 is: 2,887.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.68 : 3,757.72 = 2,091.08 : x
  2. Step 2: Convert to fraction form
    2,721.68/3,757.72 = 2,091.08/x
  3. Step 3: Cross multiply
    2,721.68x = 3,757.72 × 2,091.08
  4. Step 4: Simplify right side
    2,721.68x = 7,857,693.14
  5. Step 5: Solve for x
    x = 7,857,693.14/2,721.68
  6. Step 6: Final answer
    x = 2,887.07

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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.