Home / 2,126.11-3,189.14-739.44

Finding the Fourth Proportional to 2,126.11, 3,189.14 and 739.44

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Solution

The fourth proportional to 2,126.11, 3,189.14 and 739.44 is: 1,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.11 : 3,189.14 = 739.44 : x
  2. Step 2: Convert to fraction form
    2,126.11/3,189.14 = 739.44/x
  3. Step 3: Cross multiply
    2,126.11x = 3,189.14 × 739.44
  4. Step 4: Simplify right side
    2,126.11x = 2,358,179.53
  5. Step 5: Solve for x
    x = 2,358,179.53/2,126.11
  6. Step 6: Final answer
    x = 1,109.15

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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.