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Finding the Fourth Proportional to 3,144.52, 4,720.43 and 1,686.52

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Solution

The fourth proportional to 3,144.52, 4,720.43 and 1,686.52 is: 2,531.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.52 : 4,720.43 = 1,686.52 : x
  2. Step 2: Convert to fraction form
    3,144.52/4,720.43 = 1,686.52/x
  3. Step 3: Cross multiply
    3,144.52x = 4,720.43 × 1,686.52
  4. Step 4: Simplify right side
    3,144.52x = 7,961,100.23
  5. Step 5: Solve for x
    x = 7,961,100.23/3,144.52
  6. Step 6: Final answer
    x = 2,531.74

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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.