Home / 6,519.56-9,780.78-2,137.28

Finding the Fourth Proportional to 6,519.56, 9,780.78 and 2,137.28

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Solution

The fourth proportional to 6,519.56, 9,780.78 and 2,137.28 is: 3,206.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.56 : 9,780.78 = 2,137.28 : x
  2. Step 2: Convert to fraction form
    6,519.56/9,780.78 = 2,137.28/x
  3. Step 3: Cross multiply
    6,519.56x = 9,780.78 × 2,137.28
  4. Step 4: Simplify right side
    6,519.56x = 20,904,265.48
  5. Step 5: Solve for x
    x = 20,904,265.48/6,519.56
  6. Step 6: Final answer
    x = 3,206.39

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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.