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Finding the Fourth Proportional to 7,069.92, 9,757.08 and 3,926.40

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Solution

The fourth proportional to 7,069.92, 9,757.08 and 3,926.40 is: 5,418.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,069.92 : 9,757.08 = 3,926.40 : x
  2. Step 2: Convert to fraction form
    7,069.92/9,757.08 = 3,926.40/x
  3. Step 3: Cross multiply
    7,069.92x = 9,757.08 × 3,926.40
  4. Step 4: Simplify right side
    7,069.92x = 38,310,198.91
  5. Step 5: Solve for x
    x = 38,310,198.91/7,069.92
  6. Step 6: Final answer
    x = 5,418.76

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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.