Home / 1,975.08-2,725.38-1,189.20

Finding the Fourth Proportional to 1,975.08, 2,725.38 and 1,189.20

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Solution

The fourth proportional to 1,975.08, 2,725.38 and 1,189.20 is: 1,640.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.08 : 2,725.38 = 1,189.20 : x
  2. Step 2: Convert to fraction form
    1,975.08/2,725.38 = 1,189.20/x
  3. Step 3: Cross multiply
    1,975.08x = 2,725.38 × 1,189.20
  4. Step 4: Simplify right side
    1,975.08x = 3,241,021.90
  5. Step 5: Solve for x
    x = 3,241,021.90/1,975.08
  6. Step 6: Final answer
    x = 1,640.96

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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.