Home / 1,819.58-2,729.36-521.05

Finding the Fourth Proportional to 1,819.58, 2,729.36 and 521.05

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Solution

The fourth proportional to 1,819.58, 2,729.36 and 521.05 is: 781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.58 : 2,729.36 = 521.05 : x
  2. Step 2: Convert to fraction form
    1,819.58/2,729.36 = 521.05/x
  3. Step 3: Cross multiply
    1,819.58x = 2,729.36 × 521.05
  4. Step 4: Simplify right side
    1,819.58x = 1,422,124.90
  5. Step 5: Solve for x
    x = 1,422,124.90/1,819.58
  6. Step 6: Final answer
    x = 781.57

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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.