Home / 5,406.54-8,114.37-2,121.94

Finding the Fourth Proportional to 5,406.54, 8,114.37 and 2,121.94

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Solution

The fourth proportional to 5,406.54, 8,114.37 and 2,121.94 is: 3,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.54 : 8,114.37 = 2,121.94 : x
  2. Step 2: Convert to fraction form
    5,406.54/8,114.37 = 2,121.94/x
  3. Step 3: Cross multiply
    5,406.54x = 8,114.37 × 2,121.94
  4. Step 4: Simplify right side
    5,406.54x = 17,218,214.43
  5. Step 5: Solve for x
    x = 17,218,214.43/5,406.54
  6. Step 6: Final answer
    x = 3,184.70

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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.