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Finding the Fourth Proportional to 1,518, 2,265.78 and 1,481.16

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Solution

The fourth proportional to 1,518, 2,265.78 and 1,481.16 is: 2,210.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518 : 2,265.78 = 1,481.16 : x
  2. Step 2: Convert to fraction form
    1,518/2,265.78 = 1,481.16/x
  3. Step 3: Cross multiply
    1,518x = 2,265.78 × 1,481.16
  4. Step 4: Simplify right side
    1,518x = 3,355,982.70
  5. Step 5: Solve for x
    x = 3,355,982.70/1,518
  6. Step 6: Final answer
    x = 2,210.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.