Home / 3,190.60-4,786.56-999.49

Finding the Fourth Proportional to 3,190.60, 4,786.56 and 999.49

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Solution

The fourth proportional to 3,190.60, 4,786.56 and 999.49 is: 1,499.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.60 : 4,786.56 = 999.49 : x
  2. Step 2: Convert to fraction form
    3,190.60/4,786.56 = 999.49/x
  3. Step 3: Cross multiply
    3,190.60x = 4,786.56 × 999.49
  4. Step 4: Simplify right side
    3,190.60x = 4,784,118.85
  5. Step 5: Solve for x
    x = 4,784,118.85/3,190.60
  6. Step 6: Final answer
    x = 1,499.44

Related Problems

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Half scale
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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.