Home / 3,119.72-4,665.76-2,775.48

Finding the Fourth Proportional to 3,119.72, 4,665.76 and 2,775.48

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Solution

The fourth proportional to 3,119.72, 4,665.76 and 2,775.48 is: 4,150.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.72 : 4,665.76 = 2,775.48 : x
  2. Step 2: Convert to fraction form
    3,119.72/4,665.76 = 2,775.48/x
  3. Step 3: Cross multiply
    3,119.72x = 4,665.76 × 2,775.48
  4. Step 4: Simplify right side
    3,119.72x = 12,949,723.56
  5. Step 5: Solve for x
    x = 12,949,723.56/3,119.72
  6. Step 6: Final answer
    x = 4,150.92

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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.