Home / 7,684.40-11,529.80-3,788.84

Finding the Fourth Proportional to 7,684.40, 11,529.80 and 3,788.84

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Solution

The fourth proportional to 7,684.40, 11,529.80 and 3,788.84 is: 5,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,684.40 : 11,529.80 = 3,788.84 : x
  2. Step 2: Convert to fraction form
    7,684.40/11,529.80 = 3,788.84/x
  3. Step 3: Cross multiply
    7,684.40x = 11,529.80 × 3,788.84
  4. Step 4: Simplify right side
    7,684.40x = 43,684,567.43
  5. Step 5: Solve for x
    x = 43,684,567.43/7,684.40
  6. Step 6: Final answer
    x = 5,684.84

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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.