Home / 6,431.45-9,639.86-2,731.37

Finding the Fourth Proportional to 6,431.45, 9,639.86 and 2,731.37

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Solution

The fourth proportional to 6,431.45, 9,639.86 and 2,731.37 is: 4,093.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.45 : 9,639.86 = 2,731.37 : x
  2. Step 2: Convert to fraction form
    6,431.45/9,639.86 = 2,731.37/x
  3. Step 3: Cross multiply
    6,431.45x = 9,639.86 × 2,731.37
  4. Step 4: Simplify right side
    6,431.45x = 26,329,962.55
  5. Step 5: Solve for x
    x = 26,329,962.55/6,431.45
  6. Step 6: Final answer
    x = 4,093.94

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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.