Home / 4,286.40-6,429.96-1,512.72

Finding the Fourth Proportional to 4,286.40, 6,429.96 and 1,512.72

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Solution

The fourth proportional to 4,286.40, 6,429.96 and 1,512.72 is: 2,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.40 : 6,429.96 = 1,512.72 : x
  2. Step 2: Convert to fraction form
    4,286.40/6,429.96 = 1,512.72/x
  3. Step 3: Cross multiply
    4,286.40x = 6,429.96 × 1,512.72
  4. Step 4: Simplify right side
    4,286.40x = 9,726,729.09
  5. Step 5: Solve for x
    x = 9,726,729.09/4,286.40
  6. Step 6: Final answer
    x = 2,269.21

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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.