Home / 8,779.40-13,174.34-3,156.60

Finding the Fourth Proportional to 8,779.40, 13,174.34 and 3,156.60

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Solution

The fourth proportional to 8,779.40, 13,174.34 and 3,156.60 is: 4,736.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.40 : 13,174.34 = 3,156.60 : x
  2. Step 2: Convert to fraction form
    8,779.40/13,174.34 = 3,156.60/x
  3. Step 3: Cross multiply
    8,779.40x = 13,174.34 × 3,156.60
  4. Step 4: Simplify right side
    8,779.40x = 41,586,105.86
  5. Step 5: Solve for x
    x = 41,586,105.86/8,779.40
  6. Step 6: Final answer
    x = 4,736.78

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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.