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Finding the Fourth Proportional to 2,809.03, 4,213.96 and 908.72

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Solution

The fourth proportional to 2,809.03, 4,213.96 and 908.72 is: 1,363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.03 : 4,213.96 = 908.72 : x
  2. Step 2: Convert to fraction form
    2,809.03/4,213.96 = 908.72/x
  3. Step 3: Cross multiply
    2,809.03x = 4,213.96 × 908.72
  4. Step 4: Simplify right side
    2,809.03x = 3,829,309.73
  5. Step 5: Solve for x
    x = 3,829,309.73/2,809.03
  6. Step 6: Final answer
    x = 1,363.21

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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.