Home / 3,880.89-5,360.43-2,816.95

Finding the Fourth Proportional to 3,880.89, 5,360.43 and 2,816.95

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Solution

The fourth proportional to 3,880.89, 5,360.43 and 2,816.95 is: 3,890.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.89 : 5,360.43 = 2,816.95 : x
  2. Step 2: Convert to fraction form
    3,880.89/5,360.43 = 2,816.95/x
  3. Step 3: Cross multiply
    3,880.89x = 5,360.43 × 2,816.95
  4. Step 4: Simplify right side
    3,880.89x = 15,100,063.29
  5. Step 5: Solve for x
    x = 15,100,063.29/3,880.89
  6. Step 6: Final answer
    x = 3,890.88

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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.