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Finding the Fourth Proportional to 3,319.94, 4,979.73 and 854.88

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Solution

The fourth proportional to 3,319.94, 4,979.73 and 854.88 is: 1,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.94 : 4,979.73 = 854.88 : x
  2. Step 2: Convert to fraction form
    3,319.94/4,979.73 = 854.88/x
  3. Step 3: Cross multiply
    3,319.94x = 4,979.73 × 854.88
  4. Step 4: Simplify right side
    3,319.94x = 4,257,071.58
  5. Step 5: Solve for x
    x = 4,257,071.58/3,319.94
  6. Step 6: Final answer
    x = 1,282.28

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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.