Home / 4,286.39-6,431.40-2,309.72

Finding the Fourth Proportional to 4,286.39, 6,431.40 and 2,309.72

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Solution

The fourth proportional to 4,286.39, 6,431.40 and 2,309.72 is: 3,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.39 : 6,431.40 = 2,309.72 : x
  2. Step 2: Convert to fraction form
    4,286.39/6,431.40 = 2,309.72/x
  3. Step 3: Cross multiply
    4,286.39x = 6,431.40 × 2,309.72
  4. Step 4: Simplify right side
    4,286.39x = 14,854,701.05
  5. Step 5: Solve for x
    x = 14,854,701.05/4,286.39
  6. Step 6: Final answer
    x = 3,465.55

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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.