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Finding the Fourth Proportional to 6,543.56, 9,816.96 and 3,080

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Solution

The fourth proportional to 6,543.56, 9,816.96 and 3,080 is: 4,620.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,543.56 : 9,816.96 = 3,080 : x
  2. Step 2: Convert to fraction form
    6,543.56/9,816.96 = 3,080/x
  3. Step 3: Cross multiply
    6,543.56x = 9,816.96 × 3,080
  4. Step 4: Simplify right side
    6,543.56x = 30,236,236.80
  5. Step 5: Solve for x
    x = 30,236,236.80/6,543.56
  6. Step 6: Final answer
    x = 4,620.76

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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.