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Finding the Fourth Proportional to 2,639.04, 3,958.38 and 995.88

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Solution

The fourth proportional to 2,639.04, 3,958.38 and 995.88 is: 1,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.04 : 3,958.38 = 995.88 : x
  2. Step 2: Convert to fraction form
    2,639.04/3,958.38 = 995.88/x
  3. Step 3: Cross multiply
    2,639.04x = 3,958.38 × 995.88
  4. Step 4: Simplify right side
    2,639.04x = 3,942,071.47
  5. Step 5: Solve for x
    x = 3,942,071.47/2,639.04
  6. Step 6: Final answer
    x = 1,493.75

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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.