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Finding the Fourth Proportional to 2,900.97, 4,348.49 and 2,157.39

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Solution

The fourth proportional to 2,900.97, 4,348.49 and 2,157.39 is: 3,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.97 : 4,348.49 = 2,157.39 : x
  2. Step 2: Convert to fraction form
    2,900.97/4,348.49 = 2,157.39/x
  3. Step 3: Cross multiply
    2,900.97x = 4,348.49 × 2,157.39
  4. Step 4: Simplify right side
    2,900.97x = 9,381,378.05
  5. Step 5: Solve for x
    x = 9,381,378.05/2,900.97
  6. Step 6: Final answer
    x = 3,233.88

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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.