Home / 7,788.72-11,687.96-3,108.04

Finding the Fourth Proportional to 7,788.72, 11,687.96 and 3,108.04

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Solution

The fourth proportional to 7,788.72, 11,687.96 and 3,108.04 is: 4,664.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.72 : 11,687.96 = 3,108.04 : x
  2. Step 2: Convert to fraction form
    7,788.72/11,687.96 = 3,108.04/x
  3. Step 3: Cross multiply
    7,788.72x = 11,687.96 × 3,108.04
  4. Step 4: Simplify right side
    7,788.72x = 36,326,625.75
  5. Step 5: Solve for x
    x = 36,326,625.75/7,788.72
  6. Step 6: Final answer
    x = 4,664.00

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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.