Home / 5,418.29-8,129.78-1,910.80

Finding the Fourth Proportional to 5,418.29, 8,129.78 and 1,910.80

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Solution

The fourth proportional to 5,418.29, 8,129.78 and 1,910.80 is: 2,867.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.29 : 8,129.78 = 1,910.80 : x
  2. Step 2: Convert to fraction form
    5,418.29/8,129.78 = 1,910.80/x
  3. Step 3: Cross multiply
    5,418.29x = 8,129.78 × 1,910.80
  4. Step 4: Simplify right side
    5,418.29x = 15,534,421.28
  5. Step 5: Solve for x
    x = 15,534,421.28/5,418.29
  6. Step 6: Final answer
    x = 2,867.03

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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.