Home / 5,518.43-8,276.48-1,819.78

Finding the Fourth Proportional to 5,518.43, 8,276.48 and 1,819.78

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Solution

The fourth proportional to 5,518.43, 8,276.48 and 1,819.78 is: 2,729.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.43 : 8,276.48 = 1,819.78 : x
  2. Step 2: Convert to fraction form
    5,518.43/8,276.48 = 1,819.78/x
  3. Step 3: Cross multiply
    5,518.43x = 8,276.48 × 1,819.78
  4. Step 4: Simplify right side
    5,518.43x = 15,061,342.98
  5. Step 5: Solve for x
    x = 15,061,342.98/5,518.43
  6. Step 6: Final answer
    x = 2,729.28

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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.