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Finding the Fourth Proportional to 3,080.72, 4,615.08 and 2,923.28

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Solution

The fourth proportional to 3,080.72, 4,615.08 and 2,923.28 is: 4,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.72 : 4,615.08 = 2,923.28 : x
  2. Step 2: Convert to fraction form
    3,080.72/4,615.08 = 2,923.28/x
  3. Step 3: Cross multiply
    3,080.72x = 4,615.08 × 2,923.28
  4. Step 4: Simplify right side
    3,080.72x = 13,491,171.06
  5. Step 5: Solve for x
    x = 13,491,171.06/3,080.72
  6. Step 6: Final answer
    x = 4,379.23

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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.