Home / 2,195.38-3,294.78-1,271.80

Finding the Fourth Proportional to 2,195.38, 3,294.78 and 1,271.80

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Solution

The fourth proportional to 2,195.38, 3,294.78 and 1,271.80 is: 1,908.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.38 : 3,294.78 = 1,271.80 : x
  2. Step 2: Convert to fraction form
    2,195.38/3,294.78 = 1,271.80/x
  3. Step 3: Cross multiply
    2,195.38x = 3,294.78 × 1,271.80
  4. Step 4: Simplify right side
    2,195.38x = 4,190,301.20
  5. Step 5: Solve for x
    x = 4,190,301.20/2,195.38
  6. Step 6: Final answer
    x = 1,908.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.