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Finding the Fourth Proportional to 5,562.64, 8,343.96 and 2,789.20

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Solution

The fourth proportional to 5,562.64, 8,343.96 and 2,789.20 is: 4,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,562.64 : 8,343.96 = 2,789.20 : x
  2. Step 2: Convert to fraction form
    5,562.64/8,343.96 = 2,789.20/x
  3. Step 3: Cross multiply
    5,562.64x = 8,343.96 × 2,789.20
  4. Step 4: Simplify right side
    5,562.64x = 23,272,973.23
  5. Step 5: Solve for x
    x = 23,272,973.23/5,562.64
  6. Step 6: Final answer
    x = 4,183.80

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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.