Home / 6,490.46-9,731.43-3,205.70

Finding the Fourth Proportional to 6,490.46, 9,731.43 and 3,205.70

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Solution

The fourth proportional to 6,490.46, 9,731.43 and 3,205.70 is: 4,806.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.46 : 9,731.43 = 3,205.70 : x
  2. Step 2: Convert to fraction form
    6,490.46/9,731.43 = 3,205.70/x
  3. Step 3: Cross multiply
    6,490.46x = 9,731.43 × 3,205.70
  4. Step 4: Simplify right side
    6,490.46x = 31,196,045.15
  5. Step 5: Solve for x
    x = 31,196,045.15/6,490.46
  6. Step 6: Final answer
    x = 4,806.45

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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.