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Finding the Fourth Proportional to 3,779.71, 5,663.16 and 2,315.80

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Solution

The fourth proportional to 3,779.71, 5,663.16 and 2,315.80 is: 3,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.71 : 5,663.16 = 2,315.80 : x
  2. Step 2: Convert to fraction form
    3,779.71/5,663.16 = 2,315.80/x
  3. Step 3: Cross multiply
    3,779.71x = 5,663.16 × 2,315.80
  4. Step 4: Simplify right side
    3,779.71x = 13,114,745.93
  5. Step 5: Solve for x
    x = 13,114,745.93/3,779.71
  6. Step 6: Final answer
    x = 3,469.78

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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.