Home / 3,090.83-4,636.68-899.72

Finding the Fourth Proportional to 3,090.83, 4,636.68 and 899.72

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Solution

The fourth proportional to 3,090.83, 4,636.68 and 899.72 is: 1,349.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.83 : 4,636.68 = 899.72 : x
  2. Step 2: Convert to fraction form
    3,090.83/4,636.68 = 899.72/x
  3. Step 3: Cross multiply
    3,090.83x = 4,636.68 × 899.72
  4. Step 4: Simplify right side
    3,090.83x = 4,171,713.73
  5. Step 5: Solve for x
    x = 4,171,713.73/3,090.83
  6. Step 6: Final answer
    x = 1,349.71

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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.