Home / 8,949.76-13,418.90-3,106.78

Finding the Fourth Proportional to 8,949.76, 13,418.90 and 3,106.78

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Solution

The fourth proportional to 8,949.76, 13,418.90 and 3,106.78 is: 4,658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,949.76 : 13,418.90 = 3,106.78 : x
  2. Step 2: Convert to fraction form
    8,949.76/13,418.90 = 3,106.78/x
  3. Step 3: Cross multiply
    8,949.76x = 13,418.90 × 3,106.78
  4. Step 4: Simplify right side
    8,949.76x = 41,689,570.14
  5. Step 5: Solve for x
    x = 41,689,570.14/8,949.76
  6. Step 6: Final answer
    x = 4,658.18

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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.