Home / 5,406.18-8,109.66-1,895.78

Finding the Fourth Proportional to 5,406.18, 8,109.66 and 1,895.78

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Solution

The fourth proportional to 5,406.18, 8,109.66 and 1,895.78 is: 2,843.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.18 : 8,109.66 = 1,895.78 : x
  2. Step 2: Convert to fraction form
    5,406.18/8,109.66 = 1,895.78/x
  3. Step 3: Cross multiply
    5,406.18x = 8,109.66 × 1,895.78
  4. Step 4: Simplify right side
    5,406.18x = 15,374,131.23
  5. Step 5: Solve for x
    x = 15,374,131.23/5,406.18
  6. Step 6: Final answer
    x = 2,843.81

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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.