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Finding the Fourth Proportional to 2,899.45, 4,348.59 and 819.64

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Solution

The fourth proportional to 2,899.45, 4,348.59 and 819.64 is: 1,229.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.45 : 4,348.59 = 819.64 : x
  2. Step 2: Convert to fraction form
    2,899.45/4,348.59 = 819.64/x
  3. Step 3: Cross multiply
    2,899.45x = 4,348.59 × 819.64
  4. Step 4: Simplify right side
    2,899.45x = 3,564,278.31
  5. Step 5: Solve for x
    x = 3,564,278.31/2,899.45
  6. Step 6: Final answer
    x = 1,229.29

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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.