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Finding the Fourth Proportional to 3,268.88, 4,903.32 and 803.72

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Solution

The fourth proportional to 3,268.88, 4,903.32 and 803.72 is: 1,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,268.88 : 4,903.32 = 803.72 : x
  2. Step 2: Convert to fraction form
    3,268.88/4,903.32 = 803.72/x
  3. Step 3: Cross multiply
    3,268.88x = 4,903.32 × 803.72
  4. Step 4: Simplify right side
    3,268.88x = 3,940,896.35
  5. Step 5: Solve for x
    x = 3,940,896.35/3,268.88
  6. Step 6: Final answer
    x = 1,205.58

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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.