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Finding the Fourth Proportional to 10,442.82, 15,662.64 and 3,422.82

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Solution

The fourth proportional to 10,442.82, 15,662.64 and 3,422.82 is: 5,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,442.82 : 15,662.64 = 3,422.82 : x
  2. Step 2: Convert to fraction form
    10,442.82/15,662.64 = 3,422.82/x
  3. Step 3: Cross multiply
    10,442.82x = 15,662.64 × 3,422.82
  4. Step 4: Simplify right side
    10,442.82x = 53,610,397.44
  5. Step 5: Solve for x
    x = 53,610,397.44/10,442.82
  6. Step 6: Final answer
    x = 5,133.71

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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.