Home / 5,113.80-7,670.70-2,819.88

Finding the Fourth Proportional to 5,113.80, 7,670.70 and 2,819.88

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Solution

The fourth proportional to 5,113.80, 7,670.70 and 2,819.88 is: 4,229.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.80 : 7,670.70 = 2,819.88 : x
  2. Step 2: Convert to fraction form
    5,113.80/7,670.70 = 2,819.88/x
  3. Step 3: Cross multiply
    5,113.80x = 7,670.70 × 2,819.88
  4. Step 4: Simplify right side
    5,113.80x = 21,630,453.52
  5. Step 5: Solve for x
    x = 21,630,453.52/5,113.80
  6. Step 6: Final answer
    x = 4,229.82

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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.