Home / 1,429.11-2,142.65-550.87

Finding the Fourth Proportional to 1,429.11, 2,142.65 and 550.87

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Solution

The fourth proportional to 1,429.11, 2,142.65 and 550.87 is: 825.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.11 : 2,142.65 = 550.87 : x
  2. Step 2: Convert to fraction form
    1,429.11/2,142.65 = 550.87/x
  3. Step 3: Cross multiply
    1,429.11x = 2,142.65 × 550.87
  4. Step 4: Simplify right side
    1,429.11x = 1,180,329.68
  5. Step 5: Solve for x
    x = 1,180,329.68/1,429.11
  6. Step 6: Final answer
    x = 825.92

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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.