Home / 3,873.56-5,811.26-1,276.50

Finding the Fourth Proportional to 3,873.56, 5,811.26 and 1,276.50

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Solution

The fourth proportional to 3,873.56, 5,811.26 and 1,276.50 is: 1,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.56 : 5,811.26 = 1,276.50 : x
  2. Step 2: Convert to fraction form
    3,873.56/5,811.26 = 1,276.50/x
  3. Step 3: Cross multiply
    3,873.56x = 5,811.26 × 1,276.50
  4. Step 4: Simplify right side
    3,873.56x = 7,418,067.01
  5. Step 5: Solve for x
    x = 7,418,067.01/3,873.56
  6. Step 6: Final answer
    x = 1,915.05

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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.