Home / 7,779.38-11,669.06-2,518.80

Finding the Fourth Proportional to 7,779.38, 11,669.06 and 2,518.80

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Solution

The fourth proportional to 7,779.38, 11,669.06 and 2,518.80 is: 3,778.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.38 : 11,669.06 = 2,518.80 : x
  2. Step 2: Convert to fraction form
    7,779.38/11,669.06 = 2,518.80/x
  3. Step 3: Cross multiply
    7,779.38x = 11,669.06 × 2,518.80
  4. Step 4: Simplify right side
    7,779.38x = 29,391,990.87
  5. Step 5: Solve for x
    x = 29,391,990.87/7,779.38
  6. Step 6: Final answer
    x = 3,778.19

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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.