Home / 7,928.28-11,891.47-2,085.34

Finding the Fourth Proportional to 7,928.28, 11,891.47 and 2,085.34

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Solution

The fourth proportional to 7,928.28, 11,891.47 and 2,085.34 is: 3,127.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.28 : 11,891.47 = 2,085.34 : x
  2. Step 2: Convert to fraction form
    7,928.28/11,891.47 = 2,085.34/x
  3. Step 3: Cross multiply
    7,928.28x = 11,891.47 × 2,085.34
  4. Step 4: Simplify right side
    7,928.28x = 24,797,758.05
  5. Step 5: Solve for x
    x = 24,797,758.05/7,928.28
  6. Step 6: Final answer
    x = 3,127.76

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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.