Home / 2,687.44-4,033.20-1,207.12

Finding the Fourth Proportional to 2,687.44, 4,033.20 and 1,207.12

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Solution

The fourth proportional to 2,687.44, 4,033.20 and 1,207.12 is: 1,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.44 : 4,033.20 = 1,207.12 : x
  2. Step 2: Convert to fraction form
    2,687.44/4,033.20 = 1,207.12/x
  3. Step 3: Cross multiply
    2,687.44x = 4,033.20 × 1,207.12
  4. Step 4: Simplify right side
    2,687.44x = 4,868,556.38
  5. Step 5: Solve for x
    x = 4,868,556.38/2,687.44
  6. Step 6: Final answer
    x = 1,811.60

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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.