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Finding the Fourth Proportional to 7,934.80, 11,850.56 and 7,192.88

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Solution

The fourth proportional to 7,934.80, 11,850.56 and 7,192.88 is: 10,742.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.80 : 11,850.56 = 7,192.88 : x
  2. Step 2: Convert to fraction form
    7,934.80/11,850.56 = 7,192.88/x
  3. Step 3: Cross multiply
    7,934.80x = 11,850.56 × 7,192.88
  4. Step 4: Simplify right side
    7,934.80x = 85,239,656.01
  5. Step 5: Solve for x
    x = 85,239,656.01/7,934.80
  6. Step 6: Final answer
    x = 10,742.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.