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Finding the Fourth Proportional to 7,661.78, 11,493.36 and 2,982.14

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Solution

The fourth proportional to 7,661.78, 11,493.36 and 2,982.14 is: 4,473.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.78 : 11,493.36 = 2,982.14 : x
  2. Step 2: Convert to fraction form
    7,661.78/11,493.36 = 2,982.14/x
  3. Step 3: Cross multiply
    7,661.78x = 11,493.36 × 2,982.14
  4. Step 4: Simplify right side
    7,661.78x = 34,274,751.12
  5. Step 5: Solve for x
    x = 34,274,751.12/7,661.78
  6. Step 6: Final answer
    x = 4,473.47

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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.