Home / 7,786.18-11,678.12-2,520.52

Finding the Fourth Proportional to 7,786.18, 11,678.12 and 2,520.52

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Solution

The fourth proportional to 7,786.18, 11,678.12 and 2,520.52 is: 3,780.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,786.18 : 11,678.12 = 2,520.52 : x
  2. Step 2: Convert to fraction form
    7,786.18/11,678.12 = 2,520.52/x
  3. Step 3: Cross multiply
    7,786.18x = 11,678.12 × 2,520.52
  4. Step 4: Simplify right side
    7,786.18x = 29,434,916.85
  5. Step 5: Solve for x
    x = 29,434,916.85/7,786.18
  6. Step 6: Final answer
    x = 3,780.41

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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.