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Finding the Fourth Proportional to 4,079, 6,118.48 and 1,157.31

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Solution

The fourth proportional to 4,079, 6,118.48 and 1,157.31 is: 1,735.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079 : 6,118.48 = 1,157.31 : x
  2. Step 2: Convert to fraction form
    4,079/6,118.48 = 1,157.31/x
  3. Step 3: Cross multiply
    4,079x = 6,118.48 × 1,157.31
  4. Step 4: Simplify right side
    4,079x = 7,080,978.09
  5. Step 5: Solve for x
    x = 7,080,978.09/4,079
  6. Step 6: Final answer
    x = 1,735.96

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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.