Home / 2,512.89-3,765.23-1,278.60

Finding the Fourth Proportional to 2,512.89, 3,765.23 and 1,278.60

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Solution

The fourth proportional to 2,512.89, 3,765.23 and 1,278.60 is: 1,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.89 : 3,765.23 = 1,278.60 : x
  2. Step 2: Convert to fraction form
    2,512.89/3,765.23 = 1,278.60/x
  3. Step 3: Cross multiply
    2,512.89x = 3,765.23 × 1,278.60
  4. Step 4: Simplify right side
    2,512.89x = 4,814,211.76
  5. Step 5: Solve for x
    x = 4,814,211.76/2,512.89
  6. Step 6: Final answer
    x = 1,915.81

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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.