Home / 3,109.26-4,663.90-2,919.18

Finding the Fourth Proportional to 3,109.26, 4,663.90 and 2,919.18

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Solution

The fourth proportional to 3,109.26, 4,663.90 and 2,919.18 is: 4,378.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.26 : 4,663.90 = 2,919.18 : x
  2. Step 2: Convert to fraction form
    3,109.26/4,663.90 = 2,919.18/x
  3. Step 3: Cross multiply
    3,109.26x = 4,663.90 × 2,919.18
  4. Step 4: Simplify right side
    3,109.26x = 13,614,763.60
  5. Step 5: Solve for x
    x = 13,614,763.60/3,109.26
  6. Step 6: Final answer
    x = 4,378.78

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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.