Home / 5,715-8,572.50-1,819.44

Finding the Fourth Proportional to 5,715, 8,572.50 and 1,819.44

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Solution

The fourth proportional to 5,715, 8,572.50 and 1,819.44 is: 2,729.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715 : 8,572.50 = 1,819.44 : x
  2. Step 2: Convert to fraction form
    5,715/8,572.50 = 1,819.44/x
  3. Step 3: Cross multiply
    5,715x = 8,572.50 × 1,819.44
  4. Step 4: Simplify right side
    5,715x = 15,597,149.40
  5. Step 5: Solve for x
    x = 15,597,149.40/5,715
  6. Step 6: Final answer
    x = 2,729.16

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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.