Home / 3,921.56-5,880.51-2,278.61

Finding the Fourth Proportional to 3,921.56, 5,880.51 and 2,278.61

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Solution

The fourth proportional to 3,921.56, 5,880.51 and 2,278.61 is: 3,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.56 : 5,880.51 = 2,278.61 : x
  2. Step 2: Convert to fraction form
    3,921.56/5,880.51 = 2,278.61/x
  3. Step 3: Cross multiply
    3,921.56x = 5,880.51 × 2,278.61
  4. Step 4: Simplify right side
    3,921.56x = 13,399,359.49
  5. Step 5: Solve for x
    x = 13,399,359.49/3,921.56
  6. Step 6: Final answer
    x = 3,416.85

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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.