Home / 7,964.74-11,928.57-7,687.90

Finding the Fourth Proportional to 7,964.74, 11,928.57 and 7,687.90

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Solution

The fourth proportional to 7,964.74, 11,928.57 and 7,687.90 is: 11,513.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.74 : 11,928.57 = 7,687.90 : x
  2. Step 2: Convert to fraction form
    7,964.74/11,928.57 = 7,687.90/x
  3. Step 3: Cross multiply
    7,964.74x = 11,928.57 × 7,687.90
  4. Step 4: Simplify right side
    7,964.74x = 91,705,653.30
  5. Step 5: Solve for x
    x = 91,705,653.30/7,964.74
  6. Step 6: Final answer
    x = 11,513.95

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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.