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Finding the Fourth Proportional to 11,779.76, 17,669.39 and 4,759.62

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Solution

The fourth proportional to 11,779.76, 17,669.39 and 4,759.62 is: 7,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,779.76 : 17,669.39 = 4,759.62 : x
  2. Step 2: Convert to fraction form
    11,779.76/17,669.39 = 4,759.62/x
  3. Step 3: Cross multiply
    11,779.76x = 17,669.39 × 4,759.62
  4. Step 4: Simplify right side
    11,779.76x = 84,099,558.23
  5. Step 5: Solve for x
    x = 84,099,558.23/11,779.76
  6. Step 6: Final answer
    x = 7,139.33

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1.5x scale

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.