Home / 6,872.90-10,304.78-2,489.78

Finding the Fourth Proportional to 6,872.90, 10,304.78 and 2,489.78

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Solution

The fourth proportional to 6,872.90, 10,304.78 and 2,489.78 is: 3,733.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.90 : 10,304.78 = 2,489.78 : x
  2. Step 2: Convert to fraction form
    6,872.90/10,304.78 = 2,489.78/x
  3. Step 3: Cross multiply
    6,872.90x = 10,304.78 × 2,489.78
  4. Step 4: Simplify right side
    6,872.90x = 25,656,635.15
  5. Step 5: Solve for x
    x = 25,656,635.15/6,872.90
  6. Step 6: Final answer
    x = 3,733.01

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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.