Home / 5,405.40-8,104.33-2,767.78

Finding the Fourth Proportional to 5,405.40, 8,104.33 and 2,767.78

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Solution

The fourth proportional to 5,405.40, 8,104.33 and 2,767.78 is: 4,149.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.40 : 8,104.33 = 2,767.78 : x
  2. Step 2: Convert to fraction form
    5,405.40/8,104.33 = 2,767.78/x
  3. Step 3: Cross multiply
    5,405.40x = 8,104.33 × 2,767.78
  4. Step 4: Simplify right side
    5,405.40x = 22,431,002.49
  5. Step 5: Solve for x
    x = 22,431,002.49/5,405.40
  6. Step 6: Final answer
    x = 4,149.74

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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.