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Finding the Fourth Proportional to 4,225, 6,338.76 and 1,885.60

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Solution

The fourth proportional to 4,225, 6,338.76 and 1,885.60 is: 2,828.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,225 : 6,338.76 = 1,885.60 : x
  2. Step 2: Convert to fraction form
    4,225/6,338.76 = 1,885.60/x
  3. Step 3: Cross multiply
    4,225x = 6,338.76 × 1,885.60
  4. Step 4: Simplify right side
    4,225x = 11,952,365.86
  5. Step 5: Solve for x
    x = 11,952,365.86/4,225
  6. Step 6: Final answer
    x = 2,828.96

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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.