Home / 1,975.15-2,725.32-1,189.25

Finding the Fourth Proportional to 1,975.15, 2,725.32 and 1,189.25

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Solution

The fourth proportional to 1,975.15, 2,725.32 and 1,189.25 is: 1,640.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.15 : 2,725.32 = 1,189.25 : x
  2. Step 2: Convert to fraction form
    1,975.15/2,725.32 = 1,189.25/x
  3. Step 3: Cross multiply
    1,975.15x = 2,725.32 × 1,189.25
  4. Step 4: Simplify right side
    1,975.15x = 3,241,067.24
  5. Step 5: Solve for x
    x = 3,241,067.24/1,975.15
  6. Step 6: Final answer
    x = 1,640.93

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1.5x scale

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.