Home / 5,905.85-8,859.38-2,619.68

Finding the Fourth Proportional to 5,905.85, 8,859.38 and 2,619.68

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Solution

The fourth proportional to 5,905.85, 8,859.38 and 2,619.68 is: 3,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,905.85 : 8,859.38 = 2,619.68 : x
  2. Step 2: Convert to fraction form
    5,905.85/8,859.38 = 2,619.68/x
  3. Step 3: Cross multiply
    5,905.85x = 8,859.38 × 2,619.68
  4. Step 4: Simplify right side
    5,905.85x = 23,208,683.20
  5. Step 5: Solve for x
    x = 23,208,683.20/5,905.85
  6. Step 6: Final answer
    x = 3,929.78

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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.