Home / 5,178.11-7,766.07-1,668.43

Finding the Fourth Proportional to 5,178.11, 7,766.07 and 1,668.43

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Solution

The fourth proportional to 5,178.11, 7,766.07 and 1,668.43 is: 2,502.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.11 : 7,766.07 = 1,668.43 : x
  2. Step 2: Convert to fraction form
    5,178.11/7,766.07 = 1,668.43/x
  3. Step 3: Cross multiply
    5,178.11x = 7,766.07 × 1,668.43
  4. Step 4: Simplify right side
    5,178.11x = 12,957,124.75
  5. Step 5: Solve for x
    x = 12,957,124.75/5,178.11
  6. Step 6: Final answer
    x = 2,502.29

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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.