Home / 7,788.13-11,682.89-3,107

Finding the Fourth Proportional to 7,788.13, 11,682.89 and 3,107

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Solution

The fourth proportional to 7,788.13, 11,682.89 and 3,107 is: 4,660.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.13 : 11,682.89 = 3,107 : x
  2. Step 2: Convert to fraction form
    7,788.13/11,682.89 = 3,107/x
  3. Step 3: Cross multiply
    7,788.13x = 11,682.89 × 3,107
  4. Step 4: Simplify right side
    7,788.13x = 36,298,739.23
  5. Step 5: Solve for x
    x = 36,298,739.23/7,788.13
  6. Step 6: Final answer
    x = 4,660.78

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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.