Home / 3,110.82-4,292.78-1,931.87

Finding the Fourth Proportional to 3,110.82, 4,292.78 and 1,931.87

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Solution

The fourth proportional to 3,110.82, 4,292.78 and 1,931.87 is: 2,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.82 : 4,292.78 = 1,931.87 : x
  2. Step 2: Convert to fraction form
    3,110.82/4,292.78 = 1,931.87/x
  3. Step 3: Cross multiply
    3,110.82x = 4,292.78 × 1,931.87
  4. Step 4: Simplify right side
    3,110.82x = 8,293,061.78
  5. Step 5: Solve for x
    x = 8,293,061.78/3,110.82
  6. Step 6: Final answer
    x = 2,665.88

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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.