Home / 5,414.21-8,121.63-1,518.62

Finding the Fourth Proportional to 5,414.21, 8,121.63 and 1,518.62

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Solution

The fourth proportional to 5,414.21, 8,121.63 and 1,518.62 is: 2,278.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.21 : 8,121.63 = 1,518.62 : x
  2. Step 2: Convert to fraction form
    5,414.21/8,121.63 = 1,518.62/x
  3. Step 3: Cross multiply
    5,414.21x = 8,121.63 × 1,518.62
  4. Step 4: Simplify right side
    5,414.21x = 12,333,634.84
  5. Step 5: Solve for x
    x = 12,333,634.84/5,414.21
  6. Step 6: Final answer
    x = 2,278.01

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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.