Home / 3,678.39-5,517.56-1,487.09

Finding the Fourth Proportional to 3,678.39, 5,517.56 and 1,487.09

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Solution

The fourth proportional to 3,678.39, 5,517.56 and 1,487.09 is: 2,230.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.39 : 5,517.56 = 1,487.09 : x
  2. Step 2: Convert to fraction form
    3,678.39/5,517.56 = 1,487.09/x
  3. Step 3: Cross multiply
    3,678.39x = 5,517.56 × 1,487.09
  4. Step 4: Simplify right side
    3,678.39x = 8,205,073.28
  5. Step 5: Solve for x
    x = 8,205,073.28/3,678.39
  6. Step 6: Final answer
    x = 2,230.62

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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.