Home / 1,429.05-2,142.21-550.91

Finding the Fourth Proportional to 1,429.05, 2,142.21 and 550.91

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Solution

The fourth proportional to 1,429.05, 2,142.21 and 550.91 is: 825.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.05 : 2,142.21 = 550.91 : x
  2. Step 2: Convert to fraction form
    1,429.05/2,142.21 = 550.91/x
  3. Step 3: Cross multiply
    1,429.05x = 2,142.21 × 550.91
  4. Step 4: Simplify right side
    1,429.05x = 1,180,172.33
  5. Step 5: Solve for x
    x = 1,180,172.33/1,429.05
  6. Step 6: Final answer
    x = 825.84

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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.