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Finding the Fourth Proportional to 3,475.44, 5,213.16 and 1,422

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Solution

The fourth proportional to 3,475.44, 5,213.16 and 1,422 is: 2,133

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,475.44 : 5,213.16 = 1,422 : x
  2. Step 2: Convert to fraction form
    3,475.44/5,213.16 = 1,422/x
  3. Step 3: Cross multiply
    3,475.44x = 5,213.16 × 1,422
  4. Step 4: Simplify right side
    3,475.44x = 7,413,113.52
  5. Step 5: Solve for x
    x = 7,413,113.52/3,475.44
  6. Step 6: Final answer
    x = 2,133

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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.