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Finding the Fourth Proportional to 5,077, 7,007.22 and 2,869

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Solution

The fourth proportional to 5,077, 7,007.22 and 2,869 is: 3,959.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077 : 7,007.22 = 2,869 : x
  2. Step 2: Convert to fraction form
    5,077/7,007.22 = 2,869/x
  3. Step 3: Cross multiply
    5,077x = 7,007.22 × 2,869
  4. Step 4: Simplify right side
    5,077x = 20,103,714.18
  5. Step 5: Solve for x
    x = 20,103,714.18/5,077
  6. Step 6: Final answer
    x = 3,959.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.