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Finding the Fourth Proportional to 3,422.86, 4,724.28 and 2,163.12

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Solution

The fourth proportional to 3,422.86, 4,724.28 and 2,163.12 is: 2,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.86 : 4,724.28 = 2,163.12 : x
  2. Step 2: Convert to fraction form
    3,422.86/4,724.28 = 2,163.12/x
  3. Step 3: Cross multiply
    3,422.86x = 4,724.28 × 2,163.12
  4. Step 4: Simplify right side
    3,422.86x = 10,219,160.93
  5. Step 5: Solve for x
    x = 10,219,160.93/3,422.86
  6. Step 6: Final answer
    x = 2,985.56

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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.