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Finding the Fourth Proportional to 3,008.73, 4,513.10 and 817.40

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Solution

The fourth proportional to 3,008.73, 4,513.10 and 817.40 is: 1,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,008.73 : 4,513.10 = 817.40 : x
  2. Step 2: Convert to fraction form
    3,008.73/4,513.10 = 817.40/x
  3. Step 3: Cross multiply
    3,008.73x = 4,513.10 × 817.40
  4. Step 4: Simplify right side
    3,008.73x = 3,689,007.94
  5. Step 5: Solve for x
    x = 3,689,007.94/3,008.73
  6. Step 6: Final answer
    x = 1,226.10

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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.