Home / 4,260.64-6,391.84-1,338.88

Finding the Fourth Proportional to 4,260.64, 6,391.84 and 1,338.88

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Solution

The fourth proportional to 4,260.64, 6,391.84 and 1,338.88 is: 2,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,260.64 : 6,391.84 = 1,338.88 : x
  2. Step 2: Convert to fraction form
    4,260.64/6,391.84 = 1,338.88/x
  3. Step 3: Cross multiply
    4,260.64x = 6,391.84 × 1,338.88
  4. Step 4: Simplify right side
    4,260.64x = 8,557,906.74
  5. Step 5: Solve for x
    x = 8,557,906.74/4,260.64
  6. Step 6: Final answer
    x = 2,008.60

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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.