Home / 8,786.78-13,180.20-2,943.74

Finding the Fourth Proportional to 8,786.78, 13,180.20 and 2,943.74

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Solution

The fourth proportional to 8,786.78, 13,180.20 and 2,943.74 is: 4,415.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.78 : 13,180.20 = 2,943.74 : x
  2. Step 2: Convert to fraction form
    8,786.78/13,180.20 = 2,943.74/x
  3. Step 3: Cross multiply
    8,786.78x = 13,180.20 × 2,943.74
  4. Step 4: Simplify right side
    8,786.78x = 38,799,081.95
  5. Step 5: Solve for x
    x = 38,799,081.95/8,786.78
  6. Step 6: Final answer
    x = 4,415.62

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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.