Home / 6,689.12-9,231.24-3,704.96

Finding the Fourth Proportional to 6,689.12, 9,231.24 and 3,704.96

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Solution

The fourth proportional to 6,689.12, 9,231.24 and 3,704.96 is: 5,112.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.12 : 9,231.24 = 3,704.96 : x
  2. Step 2: Convert to fraction form
    6,689.12/9,231.24 = 3,704.96/x
  3. Step 3: Cross multiply
    6,689.12x = 9,231.24 × 3,704.96
  4. Step 4: Simplify right side
    6,689.12x = 34,201,374.95
  5. Step 5: Solve for x
    x = 34,201,374.95/6,689.12
  6. Step 6: Final answer
    x = 5,112.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.