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Finding the Fourth Proportional to 2,144.74, 3,218.12 and 759.12

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Solution

The fourth proportional to 2,144.74, 3,218.12 and 759.12 is: 1,139.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.74 : 3,218.12 = 759.12 : x
  2. Step 2: Convert to fraction form
    2,144.74/3,218.12 = 759.12/x
  3. Step 3: Cross multiply
    2,144.74x = 3,218.12 × 759.12
  4. Step 4: Simplify right side
    2,144.74x = 2,442,939.25
  5. Step 5: Solve for x
    x = 2,442,939.25/2,144.74
  6. Step 6: Final answer
    x = 1,139.04

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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.