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Finding the Fourth Proportional to 3,422.88, 4,724.37 and 2,862.39

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Solution

The fourth proportional to 3,422.88, 4,724.37 and 2,862.39 is: 3,950.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.88 : 4,724.37 = 2,862.39 : x
  2. Step 2: Convert to fraction form
    3,422.88/4,724.37 = 2,862.39/x
  3. Step 3: Cross multiply
    3,422.88x = 4,724.37 × 2,862.39
  4. Step 4: Simplify right side
    3,422.88x = 13,522,989.44
  5. Step 5: Solve for x
    x = 13,522,989.44/3,422.88
  6. Step 6: Final answer
    x = 3,950.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.