Home / 5,422.12-8,125.86-2,819.80

Finding the Fourth Proportional to 5,422.12, 8,125.86 and 2,819.80

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Solution

The fourth proportional to 5,422.12, 8,125.86 and 2,819.80 is: 4,225.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.12 : 8,125.86 = 2,819.80 : x
  2. Step 2: Convert to fraction form
    5,422.12/8,125.86 = 2,819.80/x
  3. Step 3: Cross multiply
    5,422.12x = 8,125.86 × 2,819.80
  4. Step 4: Simplify right side
    5,422.12x = 22,913,300.03
  5. Step 5: Solve for x
    x = 22,913,300.03/5,422.12
  6. Step 6: Final answer
    x = 4,225.89

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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.