Home / 7,750.89-11,619.45-2,819.61

Finding the Fourth Proportional to 7,750.89, 11,619.45 and 2,819.61

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Solution

The fourth proportional to 7,750.89, 11,619.45 and 2,819.61 is: 4,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.89 : 11,619.45 = 2,819.61 : x
  2. Step 2: Convert to fraction form
    7,750.89/11,619.45 = 2,819.61/x
  3. Step 3: Cross multiply
    7,750.89x = 11,619.45 × 2,819.61
  4. Step 4: Simplify right side
    7,750.89x = 32,762,317.41
  5. Step 5: Solve for x
    x = 32,762,317.41/7,750.89
  6. Step 6: Final answer
    x = 4,226.91

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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.