Home / 3,110.52-4,665.69-919.29

Finding the Fourth Proportional to 3,110.52, 4,665.69 and 919.29

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Solution

The fourth proportional to 3,110.52, 4,665.69 and 919.29 is: 1,378.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.52 : 4,665.69 = 919.29 : x
  2. Step 2: Convert to fraction form
    3,110.52/4,665.69 = 919.29/x
  3. Step 3: Cross multiply
    3,110.52x = 4,665.69 × 919.29
  4. Step 4: Simplify right side
    3,110.52x = 4,289,122.16
  5. Step 5: Solve for x
    x = 4,289,122.16/3,110.52
  6. Step 6: Final answer
    x = 1,378.91

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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.