Home / 5,408.79-8,111.61-2,076.81

Finding the Fourth Proportional to 5,408.79, 8,111.61 and 2,076.81

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Solution

The fourth proportional to 5,408.79, 8,111.61 and 2,076.81 is: 3,114.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.79 : 8,111.61 = 2,076.81 : x
  2. Step 2: Convert to fraction form
    5,408.79/8,111.61 = 2,076.81/x
  3. Step 3: Cross multiply
    5,408.79x = 8,111.61 × 2,076.81
  4. Step 4: Simplify right side
    5,408.79x = 16,846,242.35
  5. Step 5: Solve for x
    x = 16,846,242.35/5,408.79
  6. Step 6: Final answer
    x = 3,114.61

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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.