Home / 5,108.85-7,661.64-1,645.29

Finding the Fourth Proportional to 5,108.85, 7,661.64 and 1,645.29

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Solution

The fourth proportional to 5,108.85, 7,661.64 and 1,645.29 is: 2,467.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.85 : 7,661.64 = 1,645.29 : x
  2. Step 2: Convert to fraction form
    5,108.85/7,661.64 = 1,645.29/x
  3. Step 3: Cross multiply
    5,108.85x = 7,661.64 × 1,645.29
  4. Step 4: Simplify right side
    5,108.85x = 12,605,619.68
  5. Step 5: Solve for x
    x = 12,605,619.68/5,108.85
  6. Step 6: Final answer
    x = 2,467.41

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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.