Home / 6,639.91-9,961.40-2,257.36

Finding the Fourth Proportional to 6,639.91, 9,961.40 and 2,257.36

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Solution

The fourth proportional to 6,639.91, 9,961.40 and 2,257.36 is: 3,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.91 : 9,961.40 = 2,257.36 : x
  2. Step 2: Convert to fraction form
    6,639.91/9,961.40 = 2,257.36/x
  3. Step 3: Cross multiply
    6,639.91x = 9,961.40 × 2,257.36
  4. Step 4: Simplify right side
    6,639.91x = 22,486,446.64
  5. Step 5: Solve for x
    x = 22,486,446.64/6,639.91
  6. Step 6: Final answer
    x = 3,386.56

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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.