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Finding the Fourth Proportional to 2,720.39, 4,080.26 and 746.21

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Solution

The fourth proportional to 2,720.39, 4,080.26 and 746.21 is: 1,119.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.39 : 4,080.26 = 746.21 : x
  2. Step 2: Convert to fraction form
    2,720.39/4,080.26 = 746.21/x
  3. Step 3: Cross multiply
    2,720.39x = 4,080.26 × 746.21
  4. Step 4: Simplify right side
    2,720.39x = 3,044,745.25
  5. Step 5: Solve for x
    x = 3,044,745.25/2,720.39
  6. Step 6: Final answer
    x = 1,119.23

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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.