Home / 2,690.20-4,035.66-841.44

Finding the Fourth Proportional to 2,690.20, 4,035.66 and 841.44

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Solution

The fourth proportional to 2,690.20, 4,035.66 and 841.44 is: 1,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.20 : 4,035.66 = 841.44 : x
  2. Step 2: Convert to fraction form
    2,690.20/4,035.66 = 841.44/x
  3. Step 3: Cross multiply
    2,690.20x = 4,035.66 × 841.44
  4. Step 4: Simplify right side
    2,690.20x = 3,395,765.75
  5. Step 5: Solve for x
    x = 3,395,765.75/2,690.20
  6. Step 6: Final answer
    x = 1,262.27

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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.