Home / 8,388.44-12,586.76-3,390.60

Finding the Fourth Proportional to 8,388.44, 12,586.76 and 3,390.60

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Solution

The fourth proportional to 8,388.44, 12,586.76 and 3,390.60 is: 5,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.44 : 12,586.76 = 3,390.60 : x
  2. Step 2: Convert to fraction form
    8,388.44/12,586.76 = 3,390.60/x
  3. Step 3: Cross multiply
    8,388.44x = 12,586.76 × 3,390.60
  4. Step 4: Simplify right side
    8,388.44x = 42,676,668.46
  5. Step 5: Solve for x
    x = 42,676,668.46/8,388.44
  6. Step 6: Final answer
    x = 5,087.56

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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.