Home / 1,975.07-2,725.85-1,229.78

Finding the Fourth Proportional to 1,975.07, 2,725.85 and 1,229.78

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Solution

The fourth proportional to 1,975.07, 2,725.85 and 1,229.78 is: 1,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.07 : 2,725.85 = 1,229.78 : x
  2. Step 2: Convert to fraction form
    1,975.07/2,725.85 = 1,229.78/x
  3. Step 3: Cross multiply
    1,975.07x = 2,725.85 × 1,229.78
  4. Step 4: Simplify right side
    1,975.07x = 3,352,195.81
  5. Step 5: Solve for x
    x = 3,352,195.81/1,975.07
  6. Step 6: Final answer
    x = 1,697.25

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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.