Home / 8,631.70-12,946.64-2,786.94

Finding the Fourth Proportional to 8,631.70, 12,946.64 and 2,786.94

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Solution

The fourth proportional to 8,631.70, 12,946.64 and 2,786.94 is: 4,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.70 : 12,946.64 = 2,786.94 : x
  2. Step 2: Convert to fraction form
    8,631.70/12,946.64 = 2,786.94/x
  3. Step 3: Cross multiply
    8,631.70x = 12,946.64 × 2,786.94
  4. Step 4: Simplify right side
    8,631.70x = 36,081,494.95
  5. Step 5: Solve for x
    x = 36,081,494.95/8,631.70
  6. Step 6: Final answer
    x = 4,180.12

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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.