Home / 5,414.68-8,121.30-1,904.02

Finding the Fourth Proportional to 5,414.68, 8,121.30 and 1,904.02

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Solution

The fourth proportional to 5,414.68, 8,121.30 and 1,904.02 is: 2,855.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.68 : 8,121.30 = 1,904.02 : x
  2. Step 2: Convert to fraction form
    5,414.68/8,121.30 = 1,904.02/x
  3. Step 3: Cross multiply
    5,414.68x = 8,121.30 × 1,904.02
  4. Step 4: Simplify right side
    5,414.68x = 15,463,117.63
  5. Step 5: Solve for x
    x = 15,463,117.63/5,414.68
  6. Step 6: Final answer
    x = 2,855.78

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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.