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Finding the Fourth Proportional to 3,278.97, 4,917.53 and 1,087.71

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Solution

The fourth proportional to 3,278.97, 4,917.53 and 1,087.71 is: 1,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.97 : 4,917.53 = 1,087.71 : x
  2. Step 2: Convert to fraction form
    3,278.97/4,917.53 = 1,087.71/x
  3. Step 3: Cross multiply
    3,278.97x = 4,917.53 × 1,087.71
  4. Step 4: Simplify right side
    3,278.97x = 5,348,841.12
  5. Step 5: Solve for x
    x = 5,348,841.12/3,278.97
  6. Step 6: Final answer
    x = 1,631.26

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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.