Home / 1,975.43-2,725.99-1,091.21

Finding the Fourth Proportional to 1,975.43, 2,725.99 and 1,091.21

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Solution

The fourth proportional to 1,975.43, 2,725.99 and 1,091.21 is: 1,505.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.43 : 2,725.99 = 1,091.21 : x
  2. Step 2: Convert to fraction form
    1,975.43/2,725.99 = 1,091.21/x
  3. Step 3: Cross multiply
    1,975.43x = 2,725.99 × 1,091.21
  4. Step 4: Simplify right side
    1,975.43x = 2,974,627.55
  5. Step 5: Solve for x
    x = 2,974,627.55/1,975.43
  6. Step 6: Final answer
    x = 1,505.82

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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.