Home / 8,660.76-12,983.34-3,112.80

Finding the Fourth Proportional to 8,660.76, 12,983.34 and 3,112.80

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Solution

The fourth proportional to 8,660.76, 12,983.34 and 3,112.80 is: 4,666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.76 : 12,983.34 = 3,112.80 : x
  2. Step 2: Convert to fraction form
    8,660.76/12,983.34 = 3,112.80/x
  3. Step 3: Cross multiply
    8,660.76x = 12,983.34 × 3,112.80
  4. Step 4: Simplify right side
    8,660.76x = 40,414,486.23
  5. Step 5: Solve for x
    x = 40,414,486.23/8,660.76
  6. Step 6: Final answer
    x = 4,666.39

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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.