Home / 3,109.44-4,290.54-1,782.96

Finding the Fourth Proportional to 3,109.44, 4,290.54 and 1,782.96

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Solution

The fourth proportional to 3,109.44, 4,290.54 and 1,782.96 is: 2,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.44 : 4,290.54 = 1,782.96 : x
  2. Step 2: Convert to fraction form
    3,109.44/4,290.54 = 1,782.96/x
  3. Step 3: Cross multiply
    3,109.44x = 4,290.54 × 1,782.96
  4. Step 4: Simplify right side
    3,109.44x = 7,649,861.20
  5. Step 5: Solve for x
    x = 7,649,861.20/3,109.44
  6. Step 6: Final answer
    x = 2,460.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.