Home / 2,818.38-4,221.40-1,429.33

Finding the Fourth Proportional to 2,818.38, 4,221.40 and 1,429.33

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Solution

The fourth proportional to 2,818.38, 4,221.40 and 1,429.33 is: 2,140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.38 : 4,221.40 = 1,429.33 : x
  2. Step 2: Convert to fraction form
    2,818.38/4,221.40 = 1,429.33/x
  3. Step 3: Cross multiply
    2,818.38x = 4,221.40 × 1,429.33
  4. Step 4: Simplify right side
    2,818.38x = 6,033,773.66
  5. Step 5: Solve for x
    x = 6,033,773.66/2,818.38
  6. Step 6: Final answer
    x = 2,140.87

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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.