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Finding the Fourth Proportional to 4,786.49, 7,179.72 and 1,499.84

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Solution

The fourth proportional to 4,786.49, 7,179.72 and 1,499.84 is: 2,249.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.49 : 7,179.72 = 1,499.84 : x
  2. Step 2: Convert to fraction form
    4,786.49/7,179.72 = 1,499.84/x
  3. Step 3: Cross multiply
    4,786.49x = 7,179.72 × 1,499.84
  4. Step 4: Simplify right side
    4,786.49x = 10,768,395.35
  5. Step 5: Solve for x
    x = 10,768,395.35/4,786.49
  6. Step 6: Final answer
    x = 2,249.75

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Double scale
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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.