Home / 1,975.07-2,725.71-1,189.37

Finding the Fourth Proportional to 1,975.07, 2,725.71 and 1,189.37

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Solution

The fourth proportional to 1,975.07, 2,725.71 and 1,189.37 is: 1,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.07 : 2,725.71 = 1,189.37 : x
  2. Step 2: Convert to fraction form
    1,975.07/2,725.71 = 1,189.37/x
  3. Step 3: Cross multiply
    1,975.07x = 2,725.71 × 1,189.37
  4. Step 4: Simplify right side
    1,975.07x = 3,241,877.70
  5. Step 5: Solve for x
    x = 3,241,877.70/1,975.07
  6. Step 6: Final answer
    x = 1,641.40

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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.