Home / 9,385.14-14,078.04-2,811.78

Finding the Fourth Proportional to 9,385.14, 14,078.04 and 2,811.78

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Solution

The fourth proportional to 9,385.14, 14,078.04 and 2,811.78 is: 4,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,385.14 : 14,078.04 = 2,811.78 : x
  2. Step 2: Convert to fraction form
    9,385.14/14,078.04 = 2,811.78/x
  3. Step 3: Cross multiply
    9,385.14x = 14,078.04 × 2,811.78
  4. Step 4: Simplify right side
    9,385.14x = 39,584,351.31
  5. Step 5: Solve for x
    x = 39,584,351.31/9,385.14
  6. Step 6: Final answer
    x = 4,217.77

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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.