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Finding the Fourth Proportional to 2,226.08, 3,339.12 and 993.20

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Solution

The fourth proportional to 2,226.08, 3,339.12 and 993.20 is: 1,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.08 : 3,339.12 = 993.20 : x
  2. Step 2: Convert to fraction form
    2,226.08/3,339.12 = 993.20/x
  3. Step 3: Cross multiply
    2,226.08x = 3,339.12 × 993.20
  4. Step 4: Simplify right side
    2,226.08x = 3,316,397.29
  5. Step 5: Solve for x
    x = 3,316,397.29/2,226.08
  6. Step 6: Final answer
    x = 1,489.79

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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.