Home / 7,986.40-11,963.68-6,246.88

Finding the Fourth Proportional to 7,986.40, 11,963.68 and 6,246.88

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Solution

The fourth proportional to 7,986.40, 11,963.68 and 6,246.88 is: 9,357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.40 : 11,963.68 = 6,246.88 : x
  2. Step 2: Convert to fraction form
    7,986.40/11,963.68 = 6,246.88/x
  3. Step 3: Cross multiply
    7,986.40x = 11,963.68 × 6,246.88
  4. Step 4: Simplify right side
    7,986.40x = 74,735,673.32
  5. Step 5: Solve for x
    x = 74,735,673.32/7,986.40
  6. Step 6: Final answer
    x = 9,357.87

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1.5x scale

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.