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Finding the Fourth Proportional to 8,720.26, 12,033.70 and 4,741.28

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Solution

The fourth proportional to 8,720.26, 12,033.70 and 4,741.28 is: 6,542.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.26 : 12,033.70 = 4,741.28 : x
  2. Step 2: Convert to fraction form
    8,720.26/12,033.70 = 4,741.28/x
  3. Step 3: Cross multiply
    8,720.26x = 12,033.70 × 4,741.28
  4. Step 4: Simplify right side
    8,720.26x = 57,055,141.14
  5. Step 5: Solve for x
    x = 57,055,141.14/8,720.26
  6. Step 6: Final answer
    x = 6,542.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.