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Finding the Fourth Proportional to 3,214.63, 4,821.96 and 993.44

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Solution

The fourth proportional to 3,214.63, 4,821.96 and 993.44 is: 1,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.63 : 4,821.96 = 993.44 : x
  2. Step 2: Convert to fraction form
    3,214.63/4,821.96 = 993.44/x
  3. Step 3: Cross multiply
    3,214.63x = 4,821.96 × 993.44
  4. Step 4: Simplify right side
    3,214.63x = 4,790,327.94
  5. Step 5: Solve for x
    x = 4,790,327.94/3,214.63
  6. Step 6: Final answer
    x = 1,490.16

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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.