Home / 6,942.78-9,581.82-3,959.36

Finding the Fourth Proportional to 6,942.78, 9,581.82 and 3,959.36

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Solution

The fourth proportional to 6,942.78, 9,581.82 and 3,959.36 is: 5,464.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,942.78 : 9,581.82 = 3,959.36 : x
  2. Step 2: Convert to fraction form
    6,942.78/9,581.82 = 3,959.36/x
  3. Step 3: Cross multiply
    6,942.78x = 9,581.82 × 3,959.36
  4. Step 4: Simplify right side
    6,942.78x = 37,937,874.84
  5. Step 5: Solve for x
    x = 37,937,874.84/6,942.78
  6. Step 6: Final answer
    x = 5,464.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.