Home / 3,236.78-4,855.80-1,387.64

Finding the Fourth Proportional to 3,236.78, 4,855.80 and 1,387.64

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Solution

The fourth proportional to 3,236.78, 4,855.80 and 1,387.64 is: 2,081.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,236.78 : 4,855.80 = 1,387.64 : x
  2. Step 2: Convert to fraction form
    3,236.78/4,855.80 = 1,387.64/x
  3. Step 3: Cross multiply
    3,236.78x = 4,855.80 × 1,387.64
  4. Step 4: Simplify right side
    3,236.78x = 6,738,102.31
  5. Step 5: Solve for x
    x = 6,738,102.31/3,236.78
  6. Step 6: Final answer
    x = 2,081.73

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1.5x scale

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.