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Finding the Fourth Proportional to 4,786.29, 7,179.44 and 1,276.43

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Solution

The fourth proportional to 4,786.29, 7,179.44 and 1,276.43 is: 1,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.29 : 7,179.44 = 1,276.43 : x
  2. Step 2: Convert to fraction form
    4,786.29/7,179.44 = 1,276.43/x
  3. Step 3: Cross multiply
    4,786.29x = 7,179.44 × 1,276.43
  4. Step 4: Simplify right side
    4,786.29x = 9,164,010.32
  5. Step 5: Solve for x
    x = 9,164,010.32/4,786.29
  6. Step 6: Final answer
    x = 1,914.64

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Similar ratio
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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.