Home / 2,769.72-4,155.36-1,127.64

Finding the Fourth Proportional to 2,769.72, 4,155.36 and 1,127.64

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Solution

The fourth proportional to 2,769.72, 4,155.36 and 1,127.64 is: 1,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.72 : 4,155.36 = 1,127.64 : x
  2. Step 2: Convert to fraction form
    2,769.72/4,155.36 = 1,127.64/x
  3. Step 3: Cross multiply
    2,769.72x = 4,155.36 × 1,127.64
  4. Step 4: Simplify right side
    2,769.72x = 4,685,750.15
  5. Step 5: Solve for x
    x = 4,685,750.15/2,769.72
  6. Step 6: Final answer
    x = 1,691.78

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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.