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Finding the Fourth Proportional to 5,422.86, 7,489.70 and 3,651.39

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Solution

The fourth proportional to 5,422.86, 7,489.70 and 3,651.39 is: 5,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.86 : 7,489.70 = 3,651.39 : x
  2. Step 2: Convert to fraction form
    5,422.86/7,489.70 = 3,651.39/x
  3. Step 3: Cross multiply
    5,422.86x = 7,489.70 × 3,651.39
  4. Step 4: Simplify right side
    5,422.86x = 27,347,797.43
  5. Step 5: Solve for x
    x = 27,347,797.43/5,422.86
  6. Step 6: Final answer
    x = 5,043.06

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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.