Home / 2,290.85-3,161.18-1,295.90

Finding the Fourth Proportional to 2,290.85, 3,161.18 and 1,295.90

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Solution

The fourth proportional to 2,290.85, 3,161.18 and 1,295.90 is: 1,788.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.85 : 3,161.18 = 1,295.90 : x
  2. Step 2: Convert to fraction form
    2,290.85/3,161.18 = 1,295.90/x
  3. Step 3: Cross multiply
    2,290.85x = 3,161.18 × 1,295.90
  4. Step 4: Simplify right side
    2,290.85x = 4,096,550.88
  5. Step 5: Solve for x
    x = 4,096,550.88/2,290.85
  6. Step 6: Final answer
    x = 1,788.23

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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.