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Finding the Fourth Proportional to 8,990.88, 13,486.56 and 3,446.88

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Solution

The fourth proportional to 8,990.88, 13,486.56 and 3,446.88 is: 5,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.88 : 13,486.56 = 3,446.88 : x
  2. Step 2: Convert to fraction form
    8,990.88/13,486.56 = 3,446.88/x
  3. Step 3: Cross multiply
    8,990.88x = 13,486.56 × 3,446.88
  4. Step 4: Simplify right side
    8,990.88x = 46,486,553.93
  5. Step 5: Solve for x
    x = 46,486,553.93/8,990.88
  6. Step 6: Final answer
    x = 5,170.41

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1.5x scale

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.