Home / 6,942.90-9,581.72-3,958.80

Finding the Fourth Proportional to 6,942.90, 9,581.72 and 3,958.80

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Solution

The fourth proportional to 6,942.90, 9,581.72 and 3,958.80 is: 5,463.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,942.90 : 9,581.72 = 3,958.80 : x
  2. Step 2: Convert to fraction form
    6,942.90/9,581.72 = 3,958.80/x
  3. Step 3: Cross multiply
    6,942.90x = 9,581.72 × 3,958.80
  4. Step 4: Simplify right side
    6,942.90x = 37,932,113.14
  5. Step 5: Solve for x
    x = 37,932,113.14/6,942.90
  6. Step 6: Final answer
    x = 5,463.44

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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.