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Finding the Fourth Proportional to 3,122.56, 4,679.92 and 1,563

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Solution

The fourth proportional to 3,122.56, 4,679.92 and 1,563 is: 2,342.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.56 : 4,679.92 = 1,563 : x
  2. Step 2: Convert to fraction form
    3,122.56/4,679.92 = 1,563/x
  3. Step 3: Cross multiply
    3,122.56x = 4,679.92 × 1,563
  4. Step 4: Simplify right side
    3,122.56x = 7,314,714.96
  5. Step 5: Solve for x
    x = 7,314,714.96/3,122.56
  6. Step 6: Final answer
    x = 2,342.54

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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.